The attach-rate statistic is an important one for console manufacturers, and although Microsoft usually sees the numbers fall in their favor, Sony is claiming that the PlayStation 3's attach rate for multiplatform games is better than the Xbox 360's.
According to Gamasutra , Sony says many of the bigger blockbuster multiplatform games actually sell better on the PS3 than on the 360. But because of the user base discrepancy, one can't use hard numbers; one has to view the percentages. For example, there were 402,919 copies of Street Fighter IV sold on the PS3, while 446,435 copies of the Xbox 360 version have been sold. If you add in the difference of 5-7 million hardware units, though, the percentage falls in Sony's favor. This is a logical way to examine the numbers, of course, but Microsoft can always point to their larger installed user base and say, "that's that. We're still winning." Well, based on the fact that exclusive software tends to sell hardware, it won't be any huge surprise if the PS3 has closed the gap significantly before the end of 2009, and many analysts have predicted that Sony will catch the 360 within the next couple of years. In terms of an attach rate, perhaps it's important to select the right game…? "Blockbuster" third-party titles is kinda vague.
But Sony has also referenced Grand Theft Auto IV in the past, as they've said that the attach rate is once again better on the PS3, all things considered. This console battle is tricky, so it often relies entirely on how you interpret the facts.