Here's a comparison of the two versions based on what's on the racquets themselves. The one on the left is the heavier US version (12.0 oz unstrung) and the right is its lighter Asian counterpart (11.3 oz). The racquets are otherwise very similar. Hope this helps.
![[ GTR ]](/data/avatars/s/13/13577.jpg?1435130900){kind=avatar}