Well, if there is any game that has the chance to do it, it sure is Halo Wars.
I very much doubt that existing RTS-fans will flock to consoles just because of a Halo Wars (since the PC will remain the best platform) but at least I hope that many console gamers that today ignore RTS will discover the genre, and future RTS titles on consoles will sell in the millions.
Halo Wars will get +90% on Gamerankings, and sell well over 3 million copies. Thus a true AAA title.
And if there will be an x-mote and Halo Wars supports it, we have a game (and a MS dev team) that will go to history for it's awesomeness and innovation.