Summoners currently hold the spot as #1 DPS (this is on fights when their DoTs are allowed to tick more than 10-15s like boss encounters) in single target. No one comes close. They hold it as high as 20-30% ahead of other's. I think they are doing roughly 280-320 DPS with Relic Weapon and Darklight gear. They might be toned down as no class can even come remotely close to them.

That to me is the overpowered class.