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I found this explanation on TDKR FAQ page on IMDB that I think explains it better I ever could.
He ejected from the Bat before it flew out over the Bay. Immediately before he boarded the Bat, Selina Kyle suggested that he would eject, but Batman said he could not because the plane had "no autopilot." It turned out, however, that the plane did have autopilot—Bruce Wayne had fixed the autopilot through a software patch, as revealed in Lucius's Fox later scene where he is studying the autopilot software on the silver-colored development prototype Bat. Batman evidently ejected from the plane sometime between boarding it and when the bomb detonated. We actually see him push a lever while in flight, but the scene cuts away before revealing this lever's effect. John Blake and the orphans then view an explosion near a building, followed by the Bat flying over the bay. This explosion would hide Batman's ejection from the public's view. We do not see Batman in the Bat between the explosion and the bomb's detonation. We do see one shot of him, but it is a close-up that does not show the larger Bat. This closeup shows him turning another lever, as though piloting an aircraft, though the Bat traveled a straight path at this point. This shot therefore depicted the ejected cockpit rather than the entire Bat aircraft. Similarly, in The Dark Knight, the Batmobile ejected a self-contained vehicle (the Batpod). Also, in listening carefully, it is clear that the sound of the engine of the Bat in the scene which was previously mentioned doesn't sound mechanical at all (we just hear an electric buzz); although in the following exterior shots, the propellers of the Bat are clearly heard which might indicates that Batman boards a different vehicle with electric engines—different than the propeller-powered Bat—thus proving that he had indeed ejected.
As for Villain portrayals, I'll concede that you may have a point with a couple of them like the Joker's, The Magneto's, Thanos and Loki but Bane easily blows the rest of them out of the water especially Zemo (who has exactly the same motivation as Talia and a much more complicated and convoluted plan), Evil Galadriel, The Iron Man, oh wait I mean Spidey villains and Kevin Bacon as Kevin Bacon. You seriously think Jude Laws generic soldier is better than Bane? That's just silly.
I just watched the bomb clip on YouTube.
We very clearly see Batman in the cockpit as the Bat clears the skyscrapers and approaches the bridge.
The bat then clears the shoreline and heads out to sea, the shot then cuts to Batman in the cockpit.
We have a shot of him in the cockpit which then cuts to the ocean for about five seconds, and then to the bomb, which has 5 seconds left on the timer. Cut back to Blake on the bridge for about 2 seconds and then boom.
There are plenty of ways to shoot that - including not cutting to Batman 5 seconds before the bomb explodes, or otherwise misdirecting the audience that make it plausible that he escaped. Instead showing him in the cockpit establishes that he's in the Bat without sufficient time to escape, unless he can outrun a nuclear blast ( although I'm assuming the detonation was below the water's surface )- Claiming it's some sort of "editing trick " is not a particularly convincing explanation. I submit that this is more than a nitpick.
The more plausible explanation is that Nolan got this one wrong. I love his films but he's not perfect. TDKR had a bunch of big and interesting ideas, but for whatever reason this time his reach exceeded his grasp ( as Tesla says in the Prestige).
And for good villain portrayals - well okay at least better than Bane there's Cate Blanchett as Hela, Josh Brolin as Thanos, Heath Ledger and Joaquin Phoenix as the Joker, Ian McKellen and Michael Fassbender as Magneto, Tom Hiddleston as Loki,
Michael Keaton as Vulture, Jake Gyllenhaal as Mysterio, Jude Law as Yon Rogg, Kevin Bacon as Sebastian Shaw, Daniel Bruhl as Zemo......I could keep going. Admittedly, there have been some cbm villains worse than Bane, like Malekith, Steppenwolf, Lex Luthor and Ronan the Accuser, but at least I could understand what they were saying when I was in the cinema - I won tickets to the premiere of TDKR, and down here it opened a full day and a half before anywhere else, and all through it I kept thinking " I bet that would sound really badass if it wasn't so muffled" the Blackgate speech, especially where his voice breaks is almost unintentionally hilarious.
I respect your opinion about Bane and I will admit that his beatdown of Batman was pretty chilling, despite the " phantom punch" and that Hardy had terrific physical presence as Bane - but utterly failed with the vocalization.
I found this explanation on TDKR FAQ page on IMDB that I think explains it better I ever could.
He ejected from the Bat before it flew out over the Bay. Immediately before he boarded the Bat, Selina Kyle suggested that he would eject, but Batman said he could not because the plane had "no autopilot." It turned out, however, that the plane did have autopilot—Bruce Wayne had fixed the autopilot through a software patch, as revealed in Lucius's Fox later scene where he is studying the autopilot software on the silver-colored development prototype Bat. Batman evidently ejected from the plane sometime between boarding it and when the bomb detonated. We actually see him push a lever while in flight, but the scene cuts away before revealing this lever's effect. John Blake and the orphans then view an explosion near a building, followed by the Bat flying over the bay. This explosion would hide Batman's ejection from the public's view. We do not see Batman in the Bat between the explosion and the bomb's detonation. We do see one shot of him, but it is a close-up that does not show the larger Bat. This closeup shows him turning another lever, as though piloting an aircraft, though the Bat traveled a straight path at this point. This shot therefore depicted the ejected cockpit rather than the entire Bat aircraft. Similarly, in The Dark Knight, the Batmobile ejected a self-contained vehicle (the Batpod). Also, in listening carefully, it is clear that the sound of the engine of the Bat in the scene which was previously mentioned doesn't sound mechanical at all (we just hear an electric buzz); although in the following exterior shots, the propellers of the Bat are clearly heard which might indicates that Batman boards a different vehicle with electric engines—different than the propeller-powered Bat—thus proving that he had indeed ejected.
As for Villain portrayals, I'll concede that you may have a point with a couple of them like the Joker's, The Magneto's, Thanos and Loki but Bane easily blows the rest of them out of the water especially Zemo (who has exactly the same motivation as Talia and a much more complicated and convoluted plan), Evil Galadriel, The Iron Man, oh wait I mean Spidey villains and Kevin Bacon as Kevin Bacon. You seriously think Jude Laws generic soldier is better than Bane? That's just silly.