FWIW, the early review at CGReviews has been updated based on the retail X360 and PS3 versions.
Updates to the review:
Split screen has been removed from both versions.
X360 install not an option (Not necessary).
PS3 has faster load times with install.
Both versions nearly identical.
And last but not least,
Game rating changed from 9.3 to 9.8.
-aldo
The "early" review was a fake one. I thought that was obvious by now