Game Mechanics: Are caster mobs OP here?

[Wizardling]

All my melee toons have to avoid casters tougher than blue con, as they'll root me, blast away and remove most of my HPs even before closing to melee range, then if I get out of root, they keep up with me as I strafe run.

I don't recall casters like blue con druids in Western Karana being so grossly no-win-situation OP in classic... but it has been a long time *shrug*