Ohh the 1058 prestige guy on PC?
Also Space and Rhaegos are over 1000, according to Scouter. I see my rank dropped a lot... that's for not playing for 4 days 
Now to answer Op:
Optimal exp farming?
You need to play with friends, i don't mean that Pug are bad, but pugs play with whatever class they have fun with, Which is great, but most of time not Optimal.
You need friends, and classes that get nice combos, skills that attack multiple targets even if doesn't kill is the key. Killing everything doesn't give score Score. because for Optimal Run Experience everyone has to get exp. in a non-dragon map. 28k-35k Total experience is Optimal, for that the party need to get the most Assist+Support Experience possible.
SO in resume, Multiple Hits/AOE characters are the key.