You realize its all make-believe, and the writers could "make" him do whatever they want....right?
The next guy that writes Hulk could have him shove Thor's hammer up.his ass, and it would be "legit"
Its like any movie or show that doesn't stick with the book, graphic novel, comic...Like fanbois were pissed about Wolverine: Origins, or that Dexter didn't follow the novels...
Oh and Thor's hammer could NOT penetrate Capt. America's Shield!
Vibranium shield, or is it adamatium
