Looking at the pic above, the HULK definitely looks smaller than he did in the preview in terms of stature. In the trailer he looked amazingly ripped and he looks a lot leaner and toned then before.
Hopefully, they're not going the route of the last one where he gets bigger as the rage increases, I wasn't a fan of that concept. To me, you've got Bruce and Hulk, that's it, 2 people, 2 sizes, no Super Hulk and Regular Hulk, particularly when the suped up one was WAY to big IMO, the first metamorphosis size was just fine.
Perhaps he doesn't look so ripped because he looks passive there, whereas in the trailer he's flexing and getting ready to fight.