WoW X360 hardware really made a jump this week. Look at the games bundled with the console.
e.g. Forza 3 (no. 6) saw a 22% boost. So with software sales declining after some weeks, it actually saw a 22% increase, this can tell you something that this bundle sold a lot better than last week. Probably about 25 - 30 % better.
Or Lego Batman / PURE (no.9 / no. 10) bundled with the elite as well jumped 11 ranks up. I think it is fair to say that there are almost no copies of this game sold without the bundle. So the other Xbox 360 elite bundle saw a boost as well.
Even Sega Superstar Tennis jumped 9 ranks up. This was bundled last holiday with the Xbox 360 arcade. Probably some hidden old remainder.
And of course there is the MW2 bundle... Does anybody know how limited this really was? I bought mine without a problem. I doubt it is VERY limited, otherwise it would have been sold out everywhere.