Well mate any of those are just fine, CPU's arent dat important in gaming, only RTS games and MMO's use a lot of CPU and even my i5 4670k can play rome total war 2 without any hickups.
I am not sure what GPU u have but like i said any of those 2 are awesome picks
But in my humble opinion Intel simply kicks AMD's ass when it comes to high end stuff, hyper threading, the core architecture, Intel i7's are just freaking heavenly