This x100. Casters in this bracket can do even more burst, (IE shadow priests mind blast burst) Banning rogues and hunters is simply catering to people who don't play those classes and don't know how to arena well, this is not really opening any more viable comps. If you have a clothie that you are afraid will get burned quickly on your team you need an absorb, or a hunter close by, or stack stam when a rogue is in against you via an item set macro, or honestly any number of solutions short of banning rogues and hunters altogether.
But I digress in hopes that next time the tournament is more open to all.
Good luck to all competitors today guys, may the best tinks win.