This is funny, because none of the games shown at E3 were even running on the hardware the PS3 will have, nor was it even running on a PS3 machine. The game demos were made and presented on high end pc's, the time they showed Killzone and all those other games the consoles GPU wasnt even finished yet.
I like how Sony smoke clouds everyone and uses scripted cg scenes to win over people and crowds just like they did with their PS2. They pretty much LIE to their consumers and everyone just eats it up.
I wouldnt say Sony is in the lead if you care about the games over graphics; theres no way to know which one will be more powerful untill they are released. Sony claimed PS2 would be much more powerful than the Dreamcast yet most Dreamcast games still look far superior.
Big moves that will really make a difference are all the Japanese companies(derived from Square Enix and Capcom) Microsoft bought and the fact SquareEnix is now developing for all systems as well as Rockstar so Sony loses those two wildcards.
I plan on getting the Nintendo system though, I've come to the conclusion none of todays games on Xbox or PS2 are really fun or original with the exceptions of games like Ninja Gaiden, and Katarmari Damacy.