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

I try to develop any hero in both directions. A warrior definitely needs some magic skills, and a mage, on the contrary. Since we almost always play on XL maps, I often had to deal with the Sphere of Inhibition or the Cloak (which blocks magic up to level 3), and it's rare for a mage to do anything in battle. However, I remember a battle when, with the help of an open door and a large mana reserve, I snatched victory from a well-developed warrior. Situations can vary. In general, a reasonable balance is best.