The problem here is you're using personal experience as statistics. Obviously a skilled player will beat an unskilled thorn user. It's when two players of same skill go against each other. Kill times provide a glimpse of who has the advantage, so yes you could outmaneuver someone with thorn, but that doesn't take away from the fact that the thorn users weapon still kills faster than the other players weapon. It's this advantage that is the problem. Add this advantage to the other players inability to regen shields, and the ability to see where the other player ducks out to (with the tick damage numbers), and the above average range, and you'll see why it's considered overpowered. Do I think it should be absolutely neutered? Absolutely not. I just want it taken down a peg so it's on the same level as the scouts, pulses, and other hand cannons. The crucible would be way more diverse.