Won't sell much in the first months, but I expect some long ass legs for this game, If it gets decent reviews.

It will leg its way up to 2.8m, hopefully.

mmm... about 1.2 and 1.5 M.

On a good run i will say 3 million but that's if everything falls in place and it turns out to be a quality game

2,3 million copies, and it goes free on PSN Plus, but I am sure it will be a very good game.

Probably 1 mil in it's lifetime, but only 500,000 K in it's first 2 years on the market (which is a more telling stat)

I don't see Knack selling well. Perhaps Sony will bundle it to increase sales. I think it will be this generation's Kameo. Kameo was a decent game I picked up at Xbox360 launch.... apparently I was one of the few gamers that did.

http://www.vgchartz.com/game/1095/kameo-elements-of-power/

It's an early release for a next gen console so it'll sell, but most people who purchase it will probably get something else. I'll say one million.  I think I'm over estimating at one milion though.

Very interesting consensus growing, not what I was expecting tbh...

I was thinking around 2 million.

no clue but a nice number. will be probably a big bundle in the second holidays and i believe someone even posted that there is a rumour about an official bundle at release. that would help even more.