The eternal question: which heroes are better, mages or warriors?

I think a battle mage is great! But... a mage is even better because a mage can boost the strength of units to match that of warriors, and magic... well, there's no need to even talk about it. Plus, berserk is a great skill. And as a warrior, a mage can protect their own units with magic. But in general, I usually develop as a battle mage, focusing more on magic.