Remember they have their America / USA blinkers on. In that context GoW III does have a chance of getting up there to be best selling 1st party title on PS3 to date.
Interesting thing though is the comment that PS3 1st party doesn't sell well (in America). million seller 1st party games in America for PS3 = 6 titles, million seller 1st party games in America for 360 = 9 titles. Not a bad result (OK top 360 titles have sold way more, but being a million seller in a single region is very good, and it certainly isn't "not selling well"). Interestingly 1st party games selling over 500K in Americas is exactly equal at 15 titles. Selling 500K in Americas is a bit like being a million seller worldwide.
And what do they mean by Uncharted 2 falling out of the charts after only 1 month? Maybe the top 20 charts, but not the top 50 (Americas). It's still sitting in the top 50 as of now and showing pretty good legs.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
