your original post does not really give much detail on what you're experiencing, so I'm taking a shot in the dark.
could this be due to the stats "decline" between level 50 and 55? there is an additional coefficient divisor that kicks in after level 50 that makes each point of crit/surge/absorb/accuracy/alacrity etc count for less with each level you gain. is this what you are referencing?
Or are you comparing bolstered stats in pvp with non-bolstered?
and regarding the damage... is this coming from pvp readouts? expertise does play some part...
stats been slowly going up between 50 -55 since i *****ed.