First off, this is not to start a fanboy war.
Secondly, i've noticed that over the last few months some PS3 multiplats are better than the 360 counter part.
Just to give a few examples
PS3 GTA IV > 360 GTA IV
PS3 BURNOUT > 360 BURNOUT
PS3 SC > 360 SC
So are devolpers finally getting to know the PS3 better?