To be fair, Entroper (and I'm not trying to excuse that), but alot of demos of various games have been Beta builds, and not the final copies, and get a bit of optimization before they go gold.
Starcraft -
The issue with porting a game like Civilization is that the game is very keyboard, and requires a large number of key inputs for various actions (ie, worker commands). Because of that, consoles haven't received a Civ since Civ 2 on PS1.
But at any rate, it seems that CivRev nailed the UI perfectly, although it's not as complex as a "real" Civ. But I've heard that it's done alot of neat things with Nations having actual bonuses, and strategies vs. vanilla rulers.
Back from the dead, I'm afraid.