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What that guy is doing would be the equivalent of a melee in GW 2, killing a lvl 80 champion mob by himself. It cannot be done because GW 2 has hybrid skill based and most of the combat is by dice rolls. However in TERA, if you are good enough, you can pretty much beat anything with a Warrior class.
And for you people who think locking you in place is bad, that is intentional. It makes the combat more skill-based as you have to time your attacks.
So to be clear here, I do think GW 2 is a superior overall game to TERA but I really miss the combat in the latter one. It is far more based on your skills than anything else.