@ruff_romeo
Ever since the Slim released third party software on the PS3 have been catching up or already over taken their 360 counterparts. It's not a surprise that Dead Space is similar on both systems, but in all fairness there are plenty of multiplatform games that have sold much better on the PS3, not as money as the 360 but enough that it isn't to drastic.
Bet with Conegamer and AussieGecko that the PS3 will have more exclusives in 2011 than the Wii or 360... or something.