[quote]Last word can kill in 2 shots.[/quote] Only if you get 2 glitched ads headshots or 2 hipfire headshots. [quote]Hawkmoon can kill in 1-2 shots[/quote] With a less than 1 in 2000 chance of a one-shot kill, it's not worth taking into account. Even with a 2hsk, Thorn will fire two shots faster and with greater accuracy, granting a kill trade if the thorn user doesn't miss. [quote]Vex has a faster TTK.[/quote] For an instant death yes. But the time Thorn takes to guarantee a DoT kill is shorter than any weapon's TtK except instant kill weapons and heavies.