supposedly gtx 770 is the better card. but from several benchmark tests i've seen, with the same setups, the 770 does half as good as the 270x. notably for games like skyrim, crysis 3 and some others. i'm aware that some games are just optimized for one brand; but I read that skyrim has had a sponsorship with Nvidia which only confuses me more. So my question is, why does the 270x do so much better than the gtx 770 in some of the most graphically demanding games out right now?