Of course the 360 have other genres, lets compare some:

Best selling exclusive platformer: 

PS3 LBP - 2.16m

360 Banjo Kazooie - 0.5m

Racer

PS3 Motorstorm - 3.48m

360 - Forza 2 3.98m

Adventure:

PS3 Uncharted - 2.32m

360 Kameo: Elements of Power - 0.52m

Shooter

PS3 Resistance: Fall of Man - 3.58m

360 Halo 3 - 9.43m

RPG

PS3 Valkyria Chronicles - 0.37m

360 - Fable II 2.69m

Action

PS3 MGS4 - 3.91m

360 Saints Row - 1.94m

I can't be bothered doing more but these random genres show that the 360 in quite a few genres people just do not care much at all while the PS3 has decent sales in all areas except RPGs (you know this will change with some games yet to release outside Japan as well as FF when they release).

So, PS3 owners...they like more variety.

Not to mention all those 360 games are still selling, while most of those PS3 games have stop selling all together, by the way Halo 3 is almost at 10 million for those that don't know, that game is bullet-proof.

So I guess 360 fans can be happy with this fact when they are done playing those FOUR games. For the ps3 fans, well we still are busy finshing the TEN in the list