PSA: There's a difference.
Just played a match as DRG where the healer couldn't keep us up, a well known bad SMN who was randomly attacking everyone that when asked why, said "I'm on everyone". The tank was playing well.
I finished with 130k damage dealt (yeah it's low due to my deaths and healer deaths, I'm usually around 190-200k) in 8 minutes, the Summoner was at 230k. At the end the Summoner said "low dps" and scurried off.
Bigger numbers are not always better.
I had 5 kills because I know how and when to buffer and when to burst. The SMN had 1 which was through sheer chance after spamming bane multiple times through the fight. Nobody was ever on the marked targets but me and the tank (occasionally).
Instead of just looking at your bigger numbers, think about the group's composition and play accordingly. It was a WHM, of course he's going to keep Med2 up. Dont just DoT spam everyone and deathflare a random target who's at 100% hp.