Early on, 360 did very well.
Halo 3 hype was at an all time high.... Now after milking the series so much, the hype for Halo5 isn't nearly as much.
BioShock, Mass Effect, Gears of War, Saints Row, Dead Rising, Crackdown... 360 had a very nice exclusive line up early on in its life cycle, while PS3 was still struggling to get exclusives.
Then PS3 started getting Uncharted, The Last of Us, God of War, Killzone, InFamous, Little Big Planet, Gran Turismo, Journey, etc.... while 360 lost most of its exclusives.
PS3 eventually caught up in sales, mostly thanks to the PS3 Slim and price cut. Now going into next gen Sony has all the momentum while MS isn't looking so hot right now.
PS3 made the biggest comeback in console history.







