A lot of ppl have done 1-10 scale pvp measures for class power, most hated class and most noob class but I have not yet seen one for class with most burst.
I will start.
1. conq
2. sin
3. demo (wave of flames perk)
4. BS (crazy damage)
5. ranger
6. Dt (with avg vom stack seen in pvp)
7. tos (with totem)
8. pom
9. hox
10. guard
11. necro (but they are the 1st or 2nd most op class)
barb (unrated due to bias)
REMEMBER: this has NOTHING to do with the OP'ness of the class, I just want to see ppl's opinions of class burst