What is better in a 1 unit army - 1 red or black dragon

[Zechnophobe]

How exactly did you have a red and black dragon, one of each, fight each other Nemesis? One HAD to be under your control, and one not. The one under your control has all your attack and defense boosts (And maybe resistances.. guardian angel? Leather dress?) The one under your control should be an easy winner, even if you never touch your spellbook or dragon.

Also, You shouldn't be losing any red or black dragons, unless you are being careless with them.