Wow!!
Thats is a fanboyism working at its best.
360 is able to run any PS3 exclusive, serius guys, there is nothing in Uncharted 2 and 3 that is impossible to achieve with 360 hardware. Just give them a plastic engine, time, and MONEY and a good team of developers could make wonderful things.
The problema with PS3 fanboys is that they were iluded by Sony that lauched a hardware 50% more expensive one year later. And now, 6 years later they can only bost a handfull of games that "would be impossible on the 360"...
Well, I can only say to that: "Cross game chatting".