Have you guys ever seen Nathan Jones act?
Whenever I saw him on TV - he looked great, he really looked the part, but he couldn't act for crap. That's why he had two lines in Troy. His first line was "Urrrrrrrgh" (in a rage) and his second was "Urrrrrrrgh" (falling to the floor dead).
Brock Lesnar, btw, if any of you have seen him - looks like he'd look perfect as Eddie - he even has the cropped blonde hair, and he's HUGE - but not too tall. And, in his latest run in the WWE - he had learned how to act convincingly on a microphone - a much better choice than any other wrestler.
Yet - no wrestler that I know of (and I know literally hundreds) could pull of Eddie Brock well enough. To do Eddie properly, you will need a highly qualified actor. A famous pro wrestler will NEVER cut it.
Also, about The Hulk's size - last time I checked, but that's one of the things they GOT RIGHT in that movie. They screwed up his origin, his story, and most of everything else, but at least they made The Hulk look perfect. He gets bigger the more angry he gets. Please, people who say it wasn't "right" should go read one of the comics - he's FREAKIN HUGE!