Jouban is super aggressive, I believe he's had two Fight of the Night bonuses so far including his last bout against Saunders where he was hit a lot by a very depleted and chinny fighter. He's TOO aggressive, too his own detriment. Gets hit way, way too much. I believe Grant was fighting bigger guys earlier in his career, and he still has several highlight reel legitimate one punch KO's on his record. He's not high output, but he's precise and hard hitting, a dangerous combination.
I've already said it but Nelson effectively badly hurt and nearly stopped Jouban standing before grabbing the neck and finishing that way. Jouban literally did that "My brains are scrambled" dance where your legs go wild and everything. Not a good reaction to be having against a guy who's only a decent striker with a handful of TKO's... Then in his next fight the defensively porous but hard hitting Niko Price takes him out in one round with a big right hand. Back to back fights where his defense wasn't up to snuff and he was put into la la land by a so-so striker and then next one of the hardest hitting guys in the division. He just gets hit too easily, even Saunder's landed a ton before getting bodied.