If you know what you're doing and you glare early you can have massive uptime on UA. You don't know what you're talking about if you think is balanced. My lock does a fuckton too much damage relative to it's ilvl when I have access to my PvP talents. How PvP plays and how PvE plays are very very different. Not too many raid bosses are trying to duck or interrupt my drains.
Serious question: do you PvP? I'm thinking that might be why you don't see the difference.