I think greenberg just had no idea what he was talking about with that 2x comment.

Its still speculation.

Creamsuger always hint closer to actual actuals sales, we already knew it sold over 630k and under 895k. 

the numbers for the other COD included a whole extra week though in comparison to BO2..

So I think in the end its likely a sub 10% decrease from MW3 and a increase from Black Ops

As of now BO2 is selling faster then black Ops but below MW3...

Black Ops 2:

360 - 4.53m
PS3 - 2.87m

"The current split between the Xbox 360 and PlayStation 3 mirrors exactly the split between the two versions for the original Black Ops. In November 2010, the Xbox 360 version sold 4.9 million units in its launch month, while the PlayStation 3 version sold 3.1 million. In both cases, the sequel has seen a modest decline two years later."

though 4.5m and 2.9m should be good enough

Oh, activision is just doing this so that next year, when they come out with cod on the 1st, it'll be 20% up and everyone will be crazy.

Yep. Blops 2 had 1 Week LESS on sale than Blops and MW3. Probably within 5% with that extra Week.

so BO2 under tracked by 500 k on Xbox 360 and PS3 in the USA?

According to NPD 360 COD share in percentage is 60.81 but in VGZ over 64%. lol PS3 version is more undertracked WW.

Sleep,hope Sony will give PS3 number,it should be good enough this time even if it's close to like 700k not 790k