I think people give to much credit to ALL of Sonys exclusives.
Personally on PS3 the games that really shine and impress me are God Of War 3 and Ratchet And Clank.
To be honest Uncharted is good. Not great just good. For example I think Max Payne 3 which is just like Uncharted 2 or 3 is better than Uncharted. Only difference is the climbing in Uncharted, which could be taken out as it is linear and pointless. Uncharteds platfroming bits are pretty much a joke.
Killzone is a very average franchise just worth a go, but noting to write home about. And GT died at the start of the gen. Its competition raising the bar to high for them.
Anyway, I dunno bout Nintendo these days. Their games NEVER appeal to me anymore. The last Zelda I played and finished was OOT on the GC version. So muc better than Windwaker in fact I never finished Windwaker.
To be honest the PS3 is ok. I enjoyed a few games so far. But have been seriously surprised by the averageness of some of the games that people on forums go gaga over.
Theres better out there in the same genre imo.