I think some people intentionally miss the point and relevance of these comments.
In fact it is Microsoft who constantly attacks Sony for PS3 attach rates. IMO the stated facts in these comments should be viewed from this angle. Basically this is FUD killing.
Multi-platform titles perform relatively well on the PS3, per user people are buying more multi-platform games (at for the US and in many cases for simultaneous Japanese releases as well, it also seems to be the case for other regions).
The 360 had a 1 year headstart for Japan & North America, 1 year and 5 months for Europe. But compared to the same period last year, the PS3 today sold many millions more hardware than the 360 did.
Percentage wise the PS3 to 360 ratio has gotten slimmer very fast, of course the 360 with its headstart started out at 100%. Now its worldwide around 45% vs 55% installed base, with multi-platform games performing relatively better on the PS3 the interest to developers are closer.
The PS3 is thus hard to ignore for the bulk of 3rd party developers, hence the bulk of best selling non-Microsoft published games have all been ported to the PS3 as well. With a simultaneous release a successful high profile game like GTA IV this about doubles potential sales.







