MS warrior is okay for most situations and pretty much can take any melee class other then feral druid, and a good percentage of casters but i would have to  say, that a good rogue can take any class in the entire game, yes thats MS warriors too. I kill anyone with atleast the same gear with np as a cb evis stunlocking build, 20/0/41. Mages I just garrote and then dps away when they blink just vanish garotte blah blah blah, any other class is straight foward, kick the shit out of and then pvp trink or CoS if needed. Warriors are easily doable if you have tons of pvp experience and have very fast reflexes, you pretty much stunlock and then stay about 5-8 feet away so that way you can't get melee'd or intercepted, as  a good rogue you never want them to get hamstring off, try to keep them stunned as much as poss and then just pound away, vanish if needed. As a rogue you are dependant on tons of skill and a good mh, me, a full glad s1 and s2 rogue, has learned how to fight ms warriors the hardway, for dueling them till my eyes bleeded.