Lets face it its pretty rare!
I have only ever drawn one war 104-104 and it was by far the most fun I have ever had online (no jokes please I'm British)! I secured the 1 extra star needed for the draw (There were no realistic 2 star chances) with seconds to spare and to be frank I didn't care about loot or tie breakers it was just a fab ending.
I agree with Sharkman, having some formula then decide who won would have spoilt what I'm sure the other clan enjoyed as much as we did. Leave it as is...and enjoy it when it happens as if you care about the war it's dramatic and fun.