Which one will sell more: Killzone II or Halo Wars?

[martjuh !]

Killzone 2 without a doubt it has a much bigger hype. and i think a lot of people don't want to take the risk to pay 60 dollars for a spin off title. besides it's a genre that's pretty new on the console, i mean i never heard someone talking about how great BFME 2 was on there xbox360.