Soundwave on 03 September 2014
Assuming they were allowed to keep Madden + FIFA + NHL exclusive (though Sony/MS would be allowed to make their own NFL/NHL/soccer games) and got lots of third party support (GTA, COD, MGS, Minecraft, etc.) with a comparably spec-ed machine to the competition yes ... they would do very well.
They'd honestly probably beat Sony/MS in that case.
