Where is the proof that a Halo game that is a not a shooter is going to sell like hot cakes just because of the name?
Halo Wars is made by a high quality RTS company. (R.I.P)
I think HW has a lot more going for it then just a name... The name will help bring in more fans but the quality will give it legs. Its only real competition is the RTS format.
KZ2 has a lot more to compete with...