actually this demo isn't too bad, I will agree with the previous poster in that the game does appear to have some frame-rate type issues.
codename panzers pretty much sucks, I *REALLY* hate games that were ported from another language, especially ones that don't take the time and rewrite the script from the native language to the new language. Codename Panzer's voices are absolutely horrible, it's blatantly obvious that the voice work is just reading from the german scripts.
These are two different games as well as A&A focuses a lot more on resources and tech tree type RTS whereas CP is more along the lines of military strategy.
Anyway, the A&A demo isn't bad and it sounds like the game will have some fun co-op type multiplayer action.