OP is Biased. Honestly speed only matters in pvp and from what ive seen a hunter is faster than both classes. You cant outrun a Blink+Blade dancer Hunter. To be honest i think blade dancer is the best pvp subclass, you can blink out of Nova bomb and FoH. You can kill a titan inside their bubble, you can kill a Sunsinger with two slashes (If you get him while activating Radiance). GG is good too.
English
-
You can kill a defender in his bubble in two situations: 1. His team is in there distracting him. 2. He's bad at being a defender. Bladedancers are the easiest super to deal with as a defender, unless you count sunsinger that rez from inside the bubble.