Fun facts from your neighborhood fluff ball.
The top casters in terms of burst in a small window are as follows. (no articular order)
1. ele shaman. ( lb lava fulm ) (2 sec) 10.44x SP non crit or 16.24x SP if crits or 12.84xSp Instant lava fulm assuming crits
2. arcane (ab missiles pom-ab) (2sec) 11.55x sp non crit or 17.33x sp if crits
3. spriest ( mb dp + dots including 2 sec of a previous dp) (-1.5 sec) 8.94x sp 13.41 sp if crits.
4. boomy ( starsurge displacer bite + dots) ( -1.5 sec) 12.8x sp 19.2x sp if crits.
5. destro ( cb +incinerate+ conflagx2+ immolate dot + lash of painx2 ) (2.5 sec) 12.61 x sp or 16.6xsp if crit
most ppl have 315 ish sp running a stam heavy set . my rdruid has 355 in bgs so u can see roughly how much damage you will do and where you stand vs everything else .
all other specs have lesser burst but excel in one area or another as an example fire mage is at about 9.3 x sp ( fb py py ) ( 1.5 sec) but is completely mobile and can pull 19.6 x sp damage from rot spread in a single gcd if ppl stack.
anyways back to work for me .hope this helps a little more than " bro its alright"
( note 8xsp of boomy burst is physical and subject to armor reduc and will usualy be lower. )
(note
#2 sp= spell power so if you have 320 sp on your ele 16.24 *320 = 5196 damage meaning if you praise the sun and rng-sus loves you that's roughly the burst you can expect. )