but I still think over all PS3 is better
if we were to compare the system performance between the 2 systems PS3 has a system performace of 2 Teraflops while 360 only has 1.
ps3 supports more media formats as oppose to 360
You may be right that there are very little difference in terms of graphics, but if you have seen the graphics of MGS4 I think, it is excellent for the ps3.
plus PS3 is 100% backward compatible while the 360 isn't
here is a spec comparison between the 2 systems
http://www.ps3focus.com/archives/40