"You aren't a TR. You aren't a GF. You're the guy that's in between. You're the mop up crew. The only time you should ever feel inadequate is if, at the end of a dungeon, you've been out damaged AND out killed AND out survived. That TR might have you trumped on raw damage but that's because that's his job. He's supposed to…
Saying that we don't do as much damage as a TR but enough to count is a falacy. Singletarget damage eliminates threats to the group and reduces incoming damage. If the singletarget damage class (TR) does equal or more damage than the AOE damage class (GWF) then it's an order of magnitude more useful in a group setting.