I'd definitely give consideration to 2013 if we included 8th gen games like Super Mario 3D World and A Link Between Worlds. Without them, there's just not enough there for me.
I'd probably give it to 2010 if Xenoblade Chronicles counted, but that game launched in North America in 2012 -- one of the weaker overall years of the generation.
So, I'm left with 2007. BioShock, Super Mario Galaxy, Halo 3, Mass Effect, Call of Duty 4, Metroid Prime 3, etc.