Things to think about before you call someone "Bad"

[Vahlnir]

Then they report you because the only reason you can tell if someone's DPS is too low is if you're using a parser which is against the TOS.

If you're paying attention (and you know the class mechanics yourself) it's not hard to see when someone isn't doing what they're supposed to, and that's without actual numbers. It's made more clear by how slow something is dying.