The best game I saw at this E3 for PS2 was Devil May Cry.
However, one thing that I noticed was that the PS2 is more of a generic PC than ever before. Even though PS2 was everywhere for every game, most looked like PC games.
I would rather have quality than quantity, and you will have more PS2 games than anything combined, but almost every game will be a piece of crap. Only a handfull will be any good.