Best DPS class in the game?

[Powercow]

All classes have dots, most of them just suck. it is fairly easy to calculate how much damage a dot does and rarely do they exceed the damage of a straight up attack.

lolwat?

Provided the enemy lives long enough for the DoT to run its course, they're usually your highest damage per gcd attacks.

Edit: To Kukurumei, DoTs can crit. What I'm not sure of at the moment is if it's effected by buffs at all or if it's before they're applied or when the buff(s) are applied.

They are increased by your buffs based on when the DoT is applied.