Honestly I think the 360 deserves to list its PC crossplats, as long as they are not also on the PS3, and the PS3 deserves the PSP/PS2 cross-plat games it gets as well.
IMO you have to factor in that the 360 is an easy platform to port to/from the PC, when trying to decide which console (PS3/360 only) is more worthwhile. I suppose you could argue that PCs are so commonplace, that this is less of a factor that it first seems, but I would argue that not many people own *gaming* PCs as capable as the 360, and thus, it should count fully.
I think this list will be not very useful without that inclusion. I also think that, if you graph quality and quantity over time from release, the PS3 might look pretty impressive by comparison -- most of those 1st year titles aren't even available any longer. Maybe you should just chop off that first low-quality year from the 360 all-together.
Or... lol nm. I should make my own chart if I'm gonna complain about the integrity of yours, eh?
