If you have both trated you will only get 4 seconds of Rousing Resiliance when your Last Stand activates. Also, if (intented or not) when you activate Balanced Stance (not breaking stun) you get 4 seconds as well.
Didn’t try out to break a stun with Balanced stance, but tried to break stun with Shake it Off! and I got 8 seconds.
Was waiting this change so I could work around this trait as it sounds kinda fun to use, but meh at the state it is. I hope ANet could fix this so you at least get 8 seconds when Last Stand activates.
A Pink scumbag of [FACE] and deep inside a [GuM]ster
Mouggari – Warrior – Candy cane Avenger