Hmm. It will be really interesting if we do this again with next season's layout in September.
I don't think that clean Kostner will ever beat clean Yuna, but I am wondering what will be her layout for upcoming season. In 2012 worlds, she did almost clean program without 3lz or 3-3(she did 3F, 2A-3T.) and got 63 in TES, 65 in PCS. In 2013 worlds, she made two jumping mistakes and got 60 in TES, 70 in PCS. So she actually got 3 more pts in TES last year. Now that she raised her PCS by quite margin, will she just go for easier layout and going for clean which will give her even more PCS? (You know, Olympics bump..) I don't think she will raise her technical contents any more than this year's since it's already too risky for her.
But with Yuna, it is different story. I think she will definitely raise the level of difficulty in her technical contents in upcoming season, ie working on spin lv 4 in SP, changing jump-layout (possibly two 3F, two 3Lz) in LP etc. Given that her current coaches are the ones who completed her jump techniques when she was young, it is even possible that she may bring back her 3Lo. (by less than 10% of chance though.) In this case, even clean Asada with current crazy layout will hardly beat her.
Anyway I am very happy that Yuna is back! She is forcing everyone to bring their A- game!