AoC is the better game - it has multiplayer support.
I used to play AoK and its expansion - AoC - nearly 2 hours every day. AtroX (my (ex-) AoC Clan) became 2nd and only lost in the playoffs, we are still undefeated on island map. We played in the mideuropean AoC league with over 80 clans.
I can tell you, AoC is a real sport, it was one of the games at the
www.worldcybergames.com in Korea.
You can't really compare this 2 games, they belong to different genres. RTS comes down to multitasking (you change screenposition in average one time per second, that is a very low number for good players) and single unit handling as well as macro thinking. It is a
just in time management of ressources and untis with nearly nonstop action and mixed armys.
CIV in general is about macro thinking and diplomacy. Time is no critical factor (or ressource, depends on your point of view) and the developers put more emphasize on a longer game with many researchs. Though the rush is powerfull, it is not that powerfull like it is in nearly every RTS, that's the main difference.
People are complaing about warriors beating tanks and so on, another difference. To my mind, purists tend to play CIV.
So what? If it works, I would pump warriors when tanks are available when my warriors win in huge numbers vs tanks. It only comes down to cost per round or worker in CIV and VS (villager seconds, work one villager does in one second) in AoC, it's all about math - not reality.
I play the game to win, I don't wanna change it.