Oh, I've studied all the trees trust me.
I'm just stating the fact that;
100 Destruction + (3) Fire Augmentation Perks + Firestorm Spell + Room full of Baddies = Who Needs Swords?
First, I thought the (0-2) meant only 2 perks with 0 representing that you don't have it. So there should be only two augmentation perks? Still, at most that is a (1.75) multiplier.
Second, melee gets (Smithing)x(AttackSpeed and/or Power Attack or Sneak Attack)x(Orcpower)x(Perks) = my estimate of (2x3x2x2x4) = (96.0) multiplier
So the best base destruction spell would have to have 55x the base damage of the best melee weapon (I assumed dual wielding maces, but others probably get similar numbers)
On top of that, you can add 2 enchantments per weapon and poisons.
So yes, in a big enough room with enough meat in it, an aoe spell does more total damage. But in most normal situations, and especially against dragons, magic will need staffs and enchanted items to compete with all the stuff we already know boosts melee damage.
Edit: And I am by no means saying melee is overpowered or better than magic, I plan to use almost exclusively pickpocket and magic, I am only refuting the claim that Altmers casting magic will put out more damage than Orcs using melee.