I believe Melon got you confused with me, sorry about that.Because you quoted me so I have to repeat again: Among many reasons why Yulia's SL worked, one was thanked to her junior-ish.
I never said Yulia looked mature (and no I didn't mention Yuna so spare me). I said SL worked thanked to her youthfulness (heck, even ESPN commentators said so). The programs played to her strength and she benefited from it rightfully. The point is, Yulia's team didn't try to make her look mature, but they tried to show-off her strength and it worked.