Well, if it has a Zombies mode then that will sell about 1-2 million units extra right there. Do not underestimate the love that people have for World at War's Nazi Zombies. However, while I do think that Black Ops will sell very, very well ( I know that I will get it for my 21st birthday which is four days after release) I don't think that it will breakt the MW2 sales record. There is a certain stigma amongst some CoD fans with Treyarch, which to some people is to be treated like a horrendous STD and should be avoided. Just look on YouTube and you find comments saying that Treyarch is "teh gay fr sure! Blck Ops will suk nuts!"
I do think that the title of this article is a bit misleading in terms of what it is actually talking about, but I do think that the CoD series will continue to blossom and become better and better. The good name of the series in the eyes of the gaming community did take a big hit with MW2, but I believe that the series will rebound, recover, and become better than ever starting with Black Ops.