From what I saw from the demo, it is an accessible high production value game, its RTS nature comes after.
IMO it will attract a lot of people into the RTS world.
Note that, if you check the achievement list, Halo Wars takes also the bet to be a multiplayer experience, aiming at a new large community.I would't be suprised to see the game live like Halo 3 and www.bungie.net.
http://www.xbox360achievements.org/game/halo-wars/achievements/
... there is also an achevement called "ready for the sequel" 
Evan Wells (Uncharted 2): I think the differences that you see between any two games has much more to do with the developer than whether it’s on the Xbox or PS3.







