I guess you're focusing on narrative driven. For me the number one IP this gen is LittleBigPlanet. I'd also swap Uncharted / Mass Effect as in truth ME1 is pretty weak on combat and level design plus Uncharted (particularly number 2) delivers a far more satisfying character arc - although to be fair it's a more traditional story with less characters. Uncharted 1 & 2 constitute a more solid experience than ME1/2 I'd say, with Uncharted 2 taking narrative in a game to a new high.
L4D while very good feels a little outclassed in the list though. It's a perfect MP experience but overall it's impact still remains slight, although it's a shame as I'd like to see more games use its "director" approach.
Try to be reasonable... its easier than you think...
