all ppl that did not played WoW will say that is not true.
auguments and this stones (fire/wind bla bla) are like sokets on wow, lot of mobs look similar, the lich king, if im not wrong with his name, look similar with a new L2 RB. bouth from ice..... valakas is old, but his move, and form are perfect with an old RB from WoW. the only different thing is that the one from wow has other color. kinda blue... L2 have and will have much more, things from wow.