I prefer to beat him without Holy wars.... which isn't really much more difficult.

I had Squall doing most of the damage with limit breaks and zell handing out the occasional aura and curaga spells. Irvine was on constant defend. Then after terra break irvine would would triple cast full-life on squall and zell.

Though i felt better beating him without holy wars... i still modded bahamuts card into 100 megalixers