yeah, not much calories in popcorn... but load it down with butter and there's your Bane-sized meal.
Hardy had 5 months to pack back on the size for Bane...and as Bruce said it was to be dirty bulk muscle and fat to get there on purpose. The dude is only 5'9" tall, and most folks I talked to that saw TDKR thought he was over 6' tall and 220+ lbs when he maybe hit 185lbs. He did a similar dirty bulk for Bronson, working out 4 times per day and downing 5000+ calories with a huge fat %. His increase in size is impressive no matter how you slice it, and many saw him as intended in those roles. In Warrior he had a similar regimen except little fat and carbs + extra MMA fight training, so he was much leaner with the size gain. As Hardy stated he took what he needed to get there in the time he had...
Henry is 6'1" and took over a year to put on the clean cut 20lbs he needed(including his preprep workouts Twight had him do before they even got started together)... twice the time it took Hardy to put on a similar amount of weight due to the absence of the roids.
Ben has some good size, and with the schedule is getting there a little bit, staying with it then having a couple weeks of cut before a shirtless scene should be fine... probably something that could even go as far out as reshoots, post principal photog.
Looking at Jackman even in X1, in the mansion is far removed from his first appearance in the cage, because Hugh asked Singer if they could move shooting that cage scene towards the end of schedule for time to get some better size on. that and a good pump made it much better for him in that scene compared to the others seen right after it shot much earlier.