I'm coming late to this discussion, so I think I'll make the choice to annoy everyone. The problem with the question about who should have won the US ladies competition this year is that all 3 top ladies hae their flaws. And their strengths.
Of the 3, I most like Emily Hughes, putting me in the tiny minority as usual. But my favorite performance of hers this year has to be her Skate America SP to Carmen

rather than either of her Nationals perforamances. I love the Wilson choreography in that program, and Emily, full of fire and enthusiasm and aggressiveness, makes a very creditable and rather
different Carmen. It's no wonder that we all gave her a standing ovation at Skate America for it.
By nationals, her jumps are in better shape, but she seemed a bit slower and a bit more careful-and therefore not in the zone, exactly. And

she had dumbed down the choreography. However, one thing that Emily had at nationals, in both her short and her long, was some Jumps...Julia Sebasteyn-like huge, powerful jumps (and even Uncle Dick was duly impressed). She still fell on one jump (2nd lutz AFAIR?) and doesn't have any triple/triples though. And I've seen her spins, spirals, and general skating look better. I still like that ever so cool position in the flying back sit spin and the Charlotte into the layback though. I hope she'll continue the improvement at Worlds.
The boring mathematical argument about whether Emily was robbed centers about whether Kimmie's 3/3 in the SP should have been downgraded. IMO it should have. The second part was whether either Kimmie was undergraded or Emily overgraded in the long. If anything, I would have given Em equal PCS to Kimmie. So if you added the change from the 3/3 in the SP in, Emily should have beaten Kimmie. And personally, while they are secure, I don't like Kimmie's jumps-they're tiny and fast, and not to mention the toe-axelling. I like huge soaring jumps! And her spins aren't as fast or centered as Emily's either. Not to mention the back pumping and the airplane arms. Neither Emily nor Kimmie is an artist.
The next question is whether Alissa should have beaten Kimmie or Emily. Everyone knows what Alyssa's problems are. Now, and in the past, her jumps have been shaky. In Emily's LP, there are 7 jump elements. The first 3 (including her 2 best combos) were just totally Excellent, as was her final 3S. Her Lutz and 3t25 were good, her flip by itself a fall, In her SP the combo is Excellent and the Axel Quite Good, and the lutz average. Alissa's SP-her combo is less than average, her axel quite good, and her lutz a single disaster. In her LP, her Lutz combo, Axel,and 3Lp quite good; her flip combo, 3T2t was sub average, her 3F was downgraded, and her Lutz by itself average. In addition, she has no 3/2/2 and Emily does. Emily's spins and spirals aren't up to Alissa's, and her PCS scores should not be as high as Alissa's, and that's how the judges scored it. Myself, I could have dropped Alissa's jump GOE's even lower. They don't go up, they tend to be under rotated, and they never give you that secure feeling. For Alissa to beat Emily, you'd have to find some more points for Alissa somewhere, and I don't see it. Alissa has already got top grades on her spins and spirals, and a good edge on PCS.
So I would say that Emily probably should have won, but that the result doesn't particularly annoy me because it was close.
For any of these three girls to medal at worlds, other girls have to skate badly, or they have to improve A Lot between now and then.