I don't remember you posting DMC sales statistics while it was a PS3 exclusive, that's the point...
I had no interest in DMC as an exclusive, and I wasn't saying it was a major victory or anything for Sony.
But I have posted again and again how 'major titles' that people consider important only appeal to a small subset of the total userbase. Most major titles are sold to less than 10% of a platform. Normally much less than 10%. Thus the loss of any exclusive franchise can only account for a loss of a few % of sales. That goes for any title on any platform. Even FF! It's loss as exclusive would be a huge coup for the forumites that care, but only 5 million PS2 owners bought FFX. If FFXII sells 10 million, that's 10% of PS2s. If all those PS2 owners bought a PS2 just to play FF, it's loss as an exclusive would account for 10% lower hardware sales - if
100% of those bought a rival machine instead. If FF is still available in PS2 as a cross-platform titles, obviously the number of 'defectors' will be less, by an immeasurable margin based on other appeals of the machine.
Of course there's a couple of exceptions. For XB to lose Halo exclusivity, that'd open up a large market elsewhere. Even then, it'd make little odds to the platform I think. People aren't going to buy a PS3 just to play Halo when the XB360 is cheaper, and Wii isn't going to give the same experience. So Halo going cross-platform, which would cause a
huge furore across the whole intarweb, would probably account for little sales difference of the XB360 platform.
The real difference is in
number of exclusives, and not key titles. If 100 games are exclusive to one platform, it has extra appeal. If every game out there is cross-platform, it has no game advantage. If PS3 were to have the same level of exclusive support as older PS's, it'd be a
big plus-point. Most sane people weren't expecting this though, and to see titles become cross-platform is neither shocking nor a huge blow to Sony. At least, it shouldn't be a blow because they shouldn't have been expecting it. I haven't bought a lottery ticket, so it won't be a huge blow to me when I don't win millions on the lottery tomorrow!
As a final repeat of my key point, whatever title people think 'huge' on a platform, they have to remember that in most cases 90% or more owners of that platform couldn't care less about that game. 90% of PS2 owners couldn't care less if MGS didn't come out for it. 90% have no interest in whether FF is released on PS2 or not. 90% won't cry over the absence of Ratchet and Clank. Every million-unit best-seller is still statistically niche.