Warriors are much quicker which allows much more avoidance, which is the key to killing BAMs (well at least soloing them anyway).I've been playing both a Warrior and Slayer pretty evenly because I can't decide which I like more(both about to hit 40) and I've noticed a weird difference with my Warrior that may just be me doing something wrong.
When it comes to BAMs my Warrior is MUCH better. I've been able to solo all BAMs except for one or two types that I'm still working to figure out. My Slayer has taken out BAMs but not nearly as easily or as many, it may just be because he only has one way to dodge at the moment and it may get better when he's higher up. For some reason I have more of a problem with regular mobs on my Warrior than I do with my Slayer. My Slayer completely steamrolls them with no trouble at all. If I'm lucky with procs I'll destroy something in afew seconds, if not I can throw in stuns and still get it down pretty quickly while taking no damage. My Warrior on the other hand can handle BAMs easily, but I almost always take some damage when fighting normal mobs. I think it mostly happens when I leap in and use Traverse Cut, I'm in the animation and get hit, is there a specific way you're pulling them or a rotation you're using to kill quickly and not take much damage? I normally leap in, Traverse Cut, Blade Draw, and if Blade Draw resets Rising Fury and Blade Draw again, if it doesn't I'll go with Reign of Blows usually.
I'm really torn between the two classes right now. I think my Warrior is more my style, faster and more agile, but the Slayer does sooo much more damage, maybe I'll be able to decide when they're both 60.