im a 70 ne hunter (bm spec), and i beat about 80% of the rogues i meet even those that are geared better than me. My tactic works most of the time-

when they get the opener, i use beastial wrath. At this moment i kno that most rogues do use COS and vanish which is why i spam serpent sting to get the DOT on them right after they use COS but b4 vanish (theres no CD on serpent sting and i hit them with the sting about 80% of the time). Even if they do get the vanish in, i flare the spot that they vanished and if i can reach it. Then when they reappear (behind me or not) ive alredy layed down a snake trap, attempt a wing clip and use a concussive shot. This gives me time to get some distance and no sprint still doesn't allow them to catch up to me. From then, i grind their hp down using my hit combo (steady shot, arcane shot, multi-shot because it hits harder than a normal shot, and a normal shot). by now beastial wrath is gone but when they are getting closer i use intimidation to buy me time for another one of my combos. now the rogue is dead considering my pet was grinding their life that whole time.

BM hunter + my tactic = dead rogues =P

also i beat them coz i got a fair bit of stamina.