Here's the thing. They've had multiple builds over time. Some I have loved, some I have only liked, some I have sat out on completely, and some that just wont run on my machine. The current build Rommel is completely different than the last build. Its highly ambitious and what WWII Online should have been.
Now as for game play I'd say its a mix between WWIIO, DoD, RO & Risk. But with more weapons and vehicles than all of them combined.
I personally suggest you try it out and come back to the game over time.
GLHF