How long does it take to win

[PhilD]

Ironhawk said:
Unless your nation is specifically designed for it like Man (cheap temples, stealth preachers) or Abysia (blood sacrificing for dominion), you should probably not try to use a dominion-kill strategy.

Man doesn't get cheap temples anymore, does it? Or is there some age in which it does?

Actually, even stealth preachers have a hard time with dominion killing - what can work is having a huge starting dominion and temples in all your provinces. This simply generates a lot of "dominion pressure", and I've destroyed lots of enemy AIs this way. But then, I tend to play long games.