You are completely right, every melee class has to deal with it but the difference is the tools at their disposal to do so!
Warr - Charge, intercept, bladestorm and heroic leap in cata + hamstring. That means the moment you stop being frozen, you are already on your target and hamstring is on it instantly. As much as he slows you, he is slowed as well. So many tools at your disposal. Oh, i forgot intervene as well.
DK - CoI, death grip, desecration.. Whats more to say here..
Rogue - Muti have it a bit harder but with clos, vanish, prep, poisons they get on fine.
Ret - Freedom, self dispels. Freedom is spellstolen instantly by any decent mage since you are usually buffless when fighting mages. So for the next 20 something seconds, you are constantly kited. You can't dispel all the chills from you so you have to wait for your next freedom just so it can be spellstolen again. Repentance you say? You dmg him out of it, he continues kiting you. Repentance + hoj. He blinks from hoj. Keeps on kiting you. Don't even dare mention Judgement of Justice. All it does is makes your target move normal speed. So moving normal speed is a snare now? That will certainly help much when everything is moving 50% faster than you are
Plus you need to be 10y or less to even use it.
I could continue, but i don't really see the point. 2.5% is ret representation in arena. That's kinda low considering how "faceroll" ret is, don't you think. Funny thing is, all the people saying ret is easy to play don't have one, haven't played arena or a decent bg, have never passed 1500 rating on any of their chars (or they would see for themselves how easy to deal with ret is), and are mostly using their anus for talking.