Did you even play Tera past level 10 or something? Most skills in tera move you and animations can be cancelled, not to mention most charge skills can be cast on the move. Some classes are less mobile than others, but nothing in gw2 can compare to a warrior in tera.
But on topic, i have been looking at this game for a while, it's looking pretty interesting and I'm probably gonna check it out when it comes to the west.