I figure there are three types of players using parsers on a regular basis.

1) The type of player that wants to min/max and play at a competitive level. These players are probably playing with others of that mindset. If not, then they are idiots for expecting randoms to play the same way. In this case, there is a relationship built and reporting parse numbers is in an effort to improve the group as a whole. No matter how you deliver it, odds are good the group understands that it is for improvement of the whole.

2) The type of player that wants to perform their role to the best of their ability, because they want to excel, not because of any group gains. This player won't give a rats a** what another player's numbers look like because it doesn't really affect their performance. If they do care, it is to compare and verify that they are in fact performing at the level they are striving for.

3) The A-hole. I would say these fall in to the group of people that think they are part of group 1, but since they are a-holes, can't stay with a group that will play with them and so they take out their loneliness on the masses.

Maybe I'm wrong, but regardless, why do people feel the need to police other's performance?