All three (and others eg. Gracie) received very lenient calls for various parts of their programs, yes, Yuna got away too. To me, Yuna's stsq really missed many features compared to Caro's and even Adelina's. Attacking my understanding wouldn't help your case, her stsq was too slow, lacking energy and vigorous torso movements, feet kept close to the ice. She didn't do much to challenge the balance of her blade. I usually enjoy stsq because most skaters use that as a crescendo in their program to show off their SS and some dramatic moves to win over the audience, Caro's is a prime example.
Adelina's Carmen was also outstanding, she hit every piano note with inventive, original moves, gorgeous footwork, when she skated on one foot, the other was visibly kicking, lifted above the ice, it was beautiful, strong and spectacular, the crescendo before her final so-called "ugly" spin. Shame that she is hounded like this for winning over the "wrong" veteran, and has been shown little appreciation for her merits. From all accounts, she is a very decent person, as seen in this documentary, where Elena praised her at 8:30(also watch for the part when Tarasova smacked Kovtun really hard! 7:55

):
http://www.youtube.com/watch?v=A1LqZtubZos
I don't have particular preferences for "elegance", "graceful", "flirty", "coy" skating, I also enjoy modern, athletic, bold, original performances.
Adelina is like Midori but with more artistry and musicality.
Let's just agree to disagree, leave it at this, there's no purpose to take this forward and I leave for the record my agreement with Tech Panel call.
I am also really tired of posters who know very little of the features or bullet points that confer stsq levels, insisting how Yuna's body is so still, so smooth,...etc...therefore she should receive Level 4 (!!!) so please, folks, if you are too *lazy* to look up the links despite me posting 100 times, don't expect your persistent ignorance be dignified with an answer.