Agreed, but there's this quote from Tua himself regarding his JJ training:
"So I mean, with jiu-jitsu, I've been thrown airborne, I've been put in many uncomfortable positions for me to learn how to fall and try to react throughout those positions that I'm getting thrown around in."
So maybe he's not getting choked out, or joint-locked, but sounds like he's being flung through the air which always has the possibility of falling on his head.