Would you like an in-game parser?

[Taika]

I make sure to atleast get a grasp on mechanics before I enter fights and stay up to date on gear, I don't need a number to know if I screwed up or not.

You would be suprised how many players who keep their gear up to date and don't mess up a single mechanic are unable to pull their own weight DPS-wise. Last time I did OS4 with a pickup DD their DPS was so low if everyone else had played at their level we would have never been able to beat the fight even with 0 mistakes and deaths. And the person had i340 melded gear and did 0 mistakes. They might very well have thought they "didn't need a number" but they most certainly could have used one, because right now they were being carried hard. The worst thing is, they probably did know this, because they had seen and hidden their own parse rankings...