Some notes on Tyriel Merc taunt speed

Is it joke that Tyriel taunt is 5 spd or reference to his looser Diablo background ?
In most games it’s like - casters taking 40-50dmg hits, than Tyriel is like ‘Ok enemies, it is me who you opposing!’.
Tyriel is such a smart-a**. Why take hits, if you can just pretend you are a bit slow on taunts.