So you guys generally are opposed to parsers but there are fights with DPS check... SMH
A blm who is doing 280 in any content needs to rework his rotation or his footwork. No need to grief this player, the best players don't grief for that anyway. But at least it helps to make suggestions and learn from each other. If you see someone grieving another player because of the bad dps feel free to report.
But let's be honest, you can't really hide your lack of dmg so it's better if there's a tool that can explain why and how much you're lacking dmg.