I only watched a small portion (the jr female) and the first senior male (41-50) and was perplexed. Watching Koryo, I noticed certain elements that have been changed(?) from what I was originally showed. A couple of movements I thought were actually wrong, unless they have been officially changed. Examples; opening double sidekicks were to be done at upper shin/knee area and lower chest/stomach area. They did ankle/lower shin and head. The first triple snap kicks were to be followed with a throat grab with the body arching downward, they maintained a ridged upright stance. The arching of the arms coming together in the movement before turning into the final triple movement was always done one one leg and the arms and leg(s) came together at the same time (showed balance and strength). They had both legs together and just brought the arms together. I saw some other minor variations, but these really stuck out to me.
Just reviewing these, showed me the best IMO did not win. but it looks like politics is an ever present constant.