It's funny that all you pro parsers use this same lame comeback.

About as anecdotal and subjective as a parser determining a players skill as there is no parser that takes all variables of a given situation into play.
I met a Bard (weapon i100) doing 220 DPS (T9) where I, with Levi Weapon, was around 300. Conclusion : he is a clueless noob. But to be honest, I wasn't even using one when I noticed that his DPS was REALLY low, the numbers just gave me the confirmation.

A parser is just a statistical tool, nothing more. It doesn't say anything about "skill".