When I watched the match between the two, at first I felt that Yu Wenwen had the upper hand but the score was lower, but then I went to find out how to calculate the score and found that Yu Wenwen's shot broke the rules quite a lot, there are blows on the back of the neck. The next rounds Danny hit very well, she deserved to win.
In my opinion, if your contender has serious injuries, then even if you win him or her by beating him or her with all your might, there is still unfairness because his or her energy has already been affected and cannot really perform his or her utmost best for a fair competition and so even if you win, there is nothing much to get excited about....