and what is the highest dps class?

Well 4 servers, but they will be merged soon.

1. Entity
2. Entity-2
3.some pvp server I dont recall name of
4.same as #3 with a -2

Gunslinger / Esper i heard from all top raiders.

Gunslinger = more forgiving, easier to do high dps.
Esper = Alot more fun, slighlty unforgiven but still not to bad.

That's what i heard from top raiders, + forum research etc.
+ Some of the top streamers.

do you mean spellslinger? or is there something that turns into a gunslinger?

They changed the name from spellslinger to gunslinger now. Still the same though.

when i went to make a character i seen spellslinger i did not see a gunslinger,