Only a few classes like FM (2.5 sec), Warden(5.6 sec), Summoner (4.8 sec) can pull those numbers currently.. and you really need max gear and all buffs in order to manage that.
But NCsoft has thrown the class balance out the window long ago, If you play something like a Soul fighter, Destroyer, Warlock, Sin, Gunslinger or Blade dancer you will not reach those numbers any time soon.