I don’t know for sure that they even need to have confidence in the character. It seems to me that many people are spamming low tier/reverse counterpicks. The situation that happened to Leontes will happen from time to time. The good thing is that he picked up fifteen points. It is possible that the situation could have played out better, but then again maybe he loses a match or two in a more even or uneven the other way matchup.
I think playing all five matches should maybe be looked into further. For instance, @MysticDeadman conceded high value matches likely because he was already down 3-0. In this situation, it is possible he was not motivated by the points enough to overcome the already guaranteed 3-2 loss at best.
This is my personal anecdote. In a 2-2 situation with @neigutten, I had the chance to CP his Quince. Normally, it is rush down Zane all day, but the points steered me towards Setsuki. Historically, I have struggled in this matchup. It does bother me that my Yomi record and ELO was affected by this greed for points. Granted, it doesn’t bother me that much, but I went against Play to Win for this tournament. I don’t feel good about that.
Overall, I like the tournament format very much. I am only giving input about how I think at the moment.