Talk:Mountain Glenn (episode)/@comment-24389754-20150411171837/@comment-4010415-20150412181751

They probably set the rules that way just so that there's no room for accidents. I mean, if someone hit so hard that their opponent's 10% remaining Aura was only able to absorb part of it, it could cause some pretty bad damage on top of reducing their Aura to 0%.

Judges can assume that the first person to reach red would have lost had the fight continued, without putting the competitors at any serious risk. They wanted to reduce the margin for error as much as possible.