I think pain and gain is one of his best movies outside of the rock. Bay is a showman and hides a lot of what his story lacks in flash. He can make things look really slick, but I don't think he cares a lot about what he puts out.

James Cameron is an innovator who can bring story and spectacle to the screen. While his stories can be lacking, the experience usually isn't. I feel like he cares more about what he's doin and putting out there.