How long?

That's good news for any game that's going to be exclusive on the ps4.

http://gamrconnect.vgchartz.com/thread.php?id=61482&page=1

~2.5 years (1.5 years in PAL though)

Two years in it only had 17 (as of november 17, 2008, so almost exactly two years in)
EDIT: I see pezus answered a bit more concisely.

I say pump the brakes a bit until we see publisher reports for end of year. So many sales happen around this time, and it becomes difficult to track.

The last of us is showing some pretty good legs on PS3 and on PS4! of course is not a nintendo kind of legs but still AAA usually are front loaded and die pretty fast.

I wouldn't be suprised if TLOU(PS3) is already on 7.5-8 million range and PS4 version in 2.5-3 million range.

Funny thing though is that outside VGchartz there was people who believed TLOU wouldn't sell that well cause "PS3 games don't sell that well"

Sales like this is why PS4 will gather many 3rd party exclusives, it will make sense to plenty.

DC a million nice, given its heavly geared towards digital. 

Well, TLoU IS bundled in almost every holiday purchase, but even so, it's a great game and I'd buy a ps4 to get it for free myself

Wow that's pretty impressive!

Seems knack is a good game it sold more than other consoles exclsuive :p