My two cents:
Man of Steel is a good movie. It could have been a great movie, but as much as I think Nolan and Snyder's style worked together for (mostly) strong results during the first 90 minutes, they fell apart and became at odds for most of the last 45 minutes.
What Worked
First Henry Cavill is AMAZING as Superman. I will not say better than Reeve, because comparing them just feels silly to me. But he is the first actor since Reeve to ever make me forget about that performance. Not Dean Cain, not Tom Welling and certainly not Brandon Routh could do that.
Amy Adams offers one of the best interpretations of Lois Lane on screen. I somewhat prefer her plucky, witty interpretation in the first two Donner films, but let's just say Adams is a bit more fetching. Also, she brings a real world believability to Lois as a journalist, which is more than I can say for any film or television take to date. I especially like how they handled the Lois and Clark storyline, if you know what I mean. Different can be great.
Hans Zimmer's music. I admit that it hurt that we did not get the John Williams fanfare after Krypton blew and we saw Kal-El's ship headed to Earth. Otherwise though, Zimmer brought a new and refreshing sound to the character. It in no way replaces Williams, but like his Batman scores, it reinvents the character musically well enough that I do not find myself missing the previous composer. Which is nice because all Superman Returns did was remind me how much I wished Williams was composing.
The Kryptonian actors. They were all good for various reasons. So, I will narrow it down to the obvious. Crowe and Shannon both recreated their characters in exciting ways. Crowe may be my favorite Jor-El, unfortunately the presentation of his story left something to be desired...
Which brings me to the flipside of the good/bad barrier. The handling of the story. For the most part I thought the movie worked as a very toned down and, yes, Nolan-ized version of the story, right down to explaining where the costume came from and telling the tale in non-linear flashbacks during Clark's "lost years." Strangely, I actually preferred the Smallville scenes to the Krypton ones as Kevin Costner was fantastic as the underused Pa Kent. I also like that despite a handful of biblical references, such as Clark being 33, they left the Christian allegory to Donner and pursued a more American immigrant tale with this one. Also thematically, the writing of a haunted Clark Kent at war with himself and his multiple identities made this the most nuanced and complex interpretation of the character onscreen without falling into the trap of him becoming a brooder like Batman.
All that's great but....
What Didn't Work
First, there were times where I felt like what Goyer/Nolan put on the page came at odds with Snyder's vision. Snyder did not seem all that interested in certain things that were built up like in Batman Begins. For instance: where did the costume come from. All the stuff on that alien spaceship felt rushed to get from point A to B, because Snyder showed less of a curiosity in it. Similarly, I think the non-linear approach while different from Donner does not gel with Snyder's storytelling technique (I know odd, considering he made Watchmen). The cuts between times felt jarring. Especially the first one, but that relates to my biggest complaint:
Action burnout. Too many scenes and plots were undercut by a film that wanted to be thematically weighty from the page but felt (whether by studio mandate or not) grounded in eye candy on the screen. How much better would Krypton have been if it had remained about Jor-El, Zod and the Council? Really build it up to why Zod would perform a coup or whether this version of the council could be persuaded. Instead we got Avatar dragon-riding, weird underwater sequences and an all-too-brief scene to establish conflict between Zod and Jor-El. Similarly, the first thing we literally see Clark do on Earth instead of be a boy is save that oil rig crew. Jumping from one action sequence to the next with no room to breathe creates a senseless effect and undercuts the drama of Clark's identity crisis which isn't even introduced until nearly 30 minutes into the movie.
And that brings me to this early problem resurfacing in the third act. All the themes of Clark's Human/Kryptonian duality is completely dropped for a 45 minute throwdown. It is much better than Superman Returns' lack of action, do not get me wrong, but instead of being stunning and awe inspiring (as Snyder likely intended) it became claustrophobic in its excessiveness and wearing. I can understand if they aren't going for the "pow, wow" approach of Whedon's Avengers or Raimi's Spider-Man movies (the films that really changed the game in superhero films needing big action). However, instead of being seriously epic, the level of Metropolis destruction becomes numbing. Also, WAY TOO MANY falling skyscrapers for my taste. It felt like 9/11 x 10 and does not really make for a satisfying end, considering all the evil Zod did before that moment.
Still loved the final scene and how they twisted the mythos!
Overall, Man of Steel is a good movie. But if Snyder had more focus and tonal clarity, it could have been a great one.
7/10
My review.