You know I think about this a lot; and I feel that the range has benefit not just in pvp but in pve there is a reason why many raids limit the Stam dps numbers.
They have very high dps yes but they are legit taking more damage in both sides of the game, thus they are at more risk in pvp and also in pve cost more to keep alive, some need off balance to be effective, others need Stam fed to them, etc. Also - the rotations are more difficult as I understand (not playing a Stan build ever I cannot say for sure) and I think shuffle or whatever is no compare of magicka harness.
So there are trade offs I think to both sides. If any raid leader is that short sighted that they expect mana dps to compare to Stam - well that says more about them.
Did direfrost vet the other day and on the ice Atro boss, I kept the Stam bro buffed and fed the whole time and he did on Stam dk 58000 dps. But he was like a wet paper bag to heal and keep safe. The magicka one had same buffs and orbs and did like 34k, but needed nary a heal.
That's the difference.
- Update 23Ice Furnace: This item set now grants Spell Damage, rather than Weapon Damage for the 4 piece bonus