I read planet hulk, it was awesome. But, wtf is so different about him that makes him more powerful? Hell, he took Black Bolt's scream and wasn't hurt.
He didn't seem stronger, in fact, he seemed weaker than he used to be.
he's done alot of crazy stuff in the past, lept 1000 miles, one punched a meteor TWICE the size of earth and busted it to peaces, but he's still just a earth dude, meaning marvel dont put him up against cosmic level characters, though it would be interesting, since he did smash the meteor that makes hulk a planet buster, and leaping 1000 miles on pure leg power damn, also in the past the whisper was enough to revert him to bruce banner, it didnt do that this time, he's been so pissed in the past that he once picked up thors hammer, they need to bring those feats to fruition by making him the maddest he's ever been which he technically is. so any feat he perform now should logically top any feats he's done in the past. The guy really should be enough to fight cosmic, i mean thor is and yet thor is just a earth hero too, the hulk once became more durable then adimantium for crying out loud.
Meh, I see it as an excellent healing factor as he usually is using his ability to rebuild himself after one of the the summers brothers has demolished him
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Nothing is really different, he just developed some fighting skills, became more intelligent and probably has a higher base strength, which was already unknown anyway.
He has never picked up Thor's hammer - the real mjolnir, anyway. Heck, he couldn't even hold up Red Norvell's hammer; it broke his fingers as his hand went down with it. Doesn't matter how angry he gets, he can't overcome the magic enchantment on it.
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"I'm not smart so much as I am not dumb." - Harlan Ellison
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Trying to Lift Mjolnir with brute strength is like trying to open an electronically locked door with a house key. it's just the wrong tool, because there's not even a friggin' keyhole. It should never, EVER happen.
I suspect that since he's considerably more intelligent now, and probably more ruthless, that he can boost his strength and stamina faster than before.