im talking about a GTA exclusive for ps3.

And make it not first in console sales, but superfirst?

Though, it would help. It's GTA after all.

no i mean like could the ps3 outsell the 360 worldwide?

It outsold it in the last two (or was it three?) weeks.

no i mean like take the 2nd place.

I think so. Any console getting GTA exclusively would benifit higly from it

http://www.vgchartz.com/worldtotals.php?name=Grand theft auto&publisher=&console=&genre=&minSales=0&results=50&sort=Total

There is more than a million difference between the two versions, in 360s favour. Even if PS3 version is severely undertracked 360 version will more or less make up half of the sales. I don't see the PS3 version selling twice as much unless it's on par with San Andreas, even then it's unlikely it'll be exclusive nor it will sell as much, San Andreas was also on the original Xbox. Either way, porting is too hard to ignore in this case, so I doubt it'll ever happen now that R* knows that 360 has just as big a fanbase as the Sony brand.

u didnt answer my question.

I think that a LOT of people would buy ps3s if they knew GTA V was exclusive

Oh sorry misread the title, I don't think so. Games that sell large quantities of consoles happen early on in the life cycle, it'll do about 150-200k FW boost thanks to bundles and discounts etc, but after that it might burn off an extra 100k in hidden sales. It's just too late in the life cycle for a single exclusive to move substantial amounts of HW, imo.