For me musicality has two parts in terms of skating:
The skater must realize the tempo, the phrasing, the dynamics and the punctuation of the music through movement. While both Akiko and Michelle Kwan were very good at this, I wouldn't say they are mind-blowingly awesome in this area. Singles and pairs skating simply has too many other considerations, such as jumps, at the elite level to delve fully into every nuance of the music. Ice dance is much better in this regard.
The other part is that the skater must communicate the mood and feel of the music to the audience. Now this is where Akiko and Michelle are exceptional. Michelle is a master of mood. She always understands the feel of the music, and exuded it with utter honesty. Like Michelle, Akiko is capable of radiating mature, comprehensive and open joy to the audience. It's an exceptional and rare ability. The first time I saw Akiko skate, it did occur to me, after the euphoria wore off a bit, that it was reminiscent of Michelle.
That's not to say there haven't been single ladies skaters since Michelle who are great at weaving a mood. Yuna Kim absolutely did that repeatedly, culminating, of course, in her masterful Olympics FS that was full of weightless bliss (and a dash of flirtatiousness). And Mao Asada always commits full heart and soul into her performances, although I am particularly affected by her exhibition skates, especially her gala number this season, I Vow to Thee, My Country. Mao always, always leaves her heart out there on the gala ice. Alena Leonova is a committed and enthusiastic ham, injecting unabashed comedy into skating in a way that Michelle never did.
In my opinion, Michelle is the epitome of the actor on ice. She has something like the versatility of Meryl Streep and the fervent honesty of Hilary Swank combined. Kwan has portrayed a variety of complex roles in her programs and made them powerfully straightforward. I don't think any other skater surpasses her in this.
Great post, Serious Business. Whether one agrees or disagrees with this or that particular point in it, there is a sensitive, substantial, thought-out, fully realized perspective here that recognizes the complexity of the subject matter, as well as of the skaters (including all the names that show up in this discussion) who pursue it on ice.
To illustrate with a humbler example, I might prefer Green Day over AC-DC, but I can recognize when a particular AC-DC performance kicks butt over one by Green Day, and when that AC-DC set is better than an AC-DC performance on another occasion.
More directly on topic: Akiko is certainly one my favorites in this aspect of skating. She's like a brilliant journeyman band that was always under the radar, who couldn't afford to play with the best equipment and in the most acoustically sound venues (roughly equivalent to TES in this very loose metaphor). Then, one day, they get to show their chops in a really good recording studio, and suddenly the wider public starts to perk up and take notice, buzzing: "Who
are these guys?"
I still somewhat prefer Yuna's "sound" and overall body of work, but she's gotten so big that, unfortunately, her very success has generated a kind of backlash within some quarters. With any luck, this will, as often happens in music, mellow with time and distance, whenever it is that she officially retires. Akiko has been one of my very favorites in terms of artistry for a while now (one of those cases where her fans happily brag: I knew about her before she made it big

). Michelle is like the Beatles. Not my skating generation, but here, there and everywhere, the seminal presence who hovers in the background of all modern skating, who I've come to really appreciate in retrospect. They are my personal Big Three.
Mao is someone like Roxy Music. Either by choice or by temperament, her successful performances are within a narrower range of aesthetic vision, and has suffered at times from uneven production values (e.g. Bells of Moscow). But when she's in her comfort zone and is on (Por Una Cabeza), she is without doubt among the absolute best of her era.
Carolina is, metaphorically (and IMO), like a late-blooming experimental band that has frequently sounded awkward and clunky in the past, though the pieces were there, and the effect did not please me. As this season has progressed, however, she's found the right groove/choreography that matches her strengths, and she's learned how to make it her own, and the result was a World Championship LP performance that made me say to myself: that style of movement will never be among my personal favorites, but I can understand, admire and respect the heck out of it, and why her scores were top of the competition.
Alena is rough-hewn and she achieves her effects through sheer energy. At her best, I can see why the infectiousness can overwhelm aesthetic qualms, if you allow it. She's kind of like the Go-Go's; yeah, the material is mindless, the vocal range is only part of an octave, and the musicianship is crude, but when it's sunny and you're driving with the top down and don't want to work too hard with what you're listening to, doesn't it sometimes bring a smile to your face?