Oh, I agree that the White Centaur is among the best, if not the best sacred unit that I have seen. Better than your Black Hunter (although that unit is good). I based my strategy on them. They may not have a counter in the early game if they are used aggressively, although you destroyed many of them (as did Ironhawk, by the way). I didn't just roll over anybody (unfortunately

).
My goal was war from the outset. If you hadn't attacked me first, I was 50/50 on attacking you, but I would have attacked somebody. I would be the "anti-turtler" (no clams, fever fetishes, castles, etc.). I just find it more fun

But it hasn't proven (except once) to be ultimately successful.
My problem has generally been that this strategy loses it's luster in the mid game. Perhaps I'm just not very good, but I've found that I start to lose against Mages and SCs. In being so aggressive, I also spend resources on armies (and not castles) and am therefore an easy target for a nation that has sat back and researched. I also have a small gem income because I haven't bought many mages.
Jurri was able to easily beat up on me in the last game with a combination of Ghost Riders, Ice Devils and Tartarians (and some other stuff that I've forgotten, I'm sure - Air Queens probably).