Playstation 3 is looking at longer lifecycle than Xbox 360 (or atleast it looks like that), it's already outselling Xbox in the same time frame since release, it's selling more worldwide for the last 9 or so months, the gap is smaller than when they released and PS3 has the better momentum. So we are most likely looking at larger installbase for the PS3 in the end and without the threat to piracy. Even when XBox fans are FPS junkies and Halo is their religion, the oversaturation of the FPS genre and 2 Halo games prior to Reach this generation might decrease it's final sales in the end. On the other hand PS fans are waiting for a GT game for several years now, it allways was a flagship title and the GT5 looks better than any other racing game out there (not only visuals, but the game as a whole).
So my prediction is that LTD Gran Turismo 5 will have more units sold than Halo Reach and with significant difference (not 2:1, but with difference in millions). And I also think that first month sales difference between both of those games won't be that drastical as many here forsee it to be, Halo will have more units sold, but not by a lot.
MY HYPE LIST: 1) Gran Turismo 5; 2) Civilization V; 3) Starcraft II; 4) The Last Guardian; 5) Metal Gear Solid: Rising
