Finally saw the film. Hands down this movie will win the oscar for best vfx. It may have some bad color mis match and matte/key issues, but that is over shadowed by the amount of incredible shots. It seems the debates that take place here are over matte lines or color corrections, which at times can really take you out of the picture. This movie to me was about animation, lighting and fx, and at times compositing may have been an after thought, which it usually suffers from since it's the back end of the process with the least amount of time.
The scene where kong fights the first T-rex was some of the best CG I've ever seen. The animation was great and believable, but the lighting and fur is what made my jaw drop. That sequence in itself is what deserves the oscar.