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

I think the question isn't about the initial heroes, but about the ones that have been leveled up, where 7-6 other skills are added to the 1-2 initial skills. By the way, initially, warriors differ from mages (except for necromancers) in the absence/presence of wisdom and a spellbook – other skills may be different. By the way, how should we classify warriors who have initial wisdom + literacy or advanced literacy (purely magical skills)? As a warrior, he won't strengthen the army, and as a mage without a spellbook, he won't cast any spells. However, this is not a question, but rather information for consideration.