Insane dps can be done in the first seconds of a fight because mostly the first big numbers create the high dps in skada/recount. For example warlocks need a few seconds to pull that off, melees can get there faster. Hunters, being the class with mostly highest critrate and skilled player do that all the time. I myself just did 250k top on my warlock with bloodlust, dark soul and kafapress as affliction in a 25sec fight. At the end I had 187k left. This would not work for algalon because it took me longer to pull off than the fight should be.