Sakamoto's last results:
NHK: 223.84
SA: 215.93
Asian Open: 202.28
WTT: 228.07
Worlds: 207.80
NHK: 229.51
I mean, Kaori's high scoring events have all been in Japan, and she has an upwards trajectory, so maybe she'll do well at the GPF, and it's also why I've placed her so high in my own top 10. I'm just saying the Japanese women as a whole don't have a particularly reliable skater on their roster at the moment, but Sakamoto is clearly the best of them.
I do watch the Japanese skaters and have great respect for their training and talents, but I also call a spade a spade. They're just not serving it right now. Liu isn't the greatest jumper post-puberty but she's still going for a 3A and regaining her difficulty and going for one of the hardest non-quad layouts. As far as being juniorish, she got a PCS personal bests of 33.28/69.20 at NHK/Lombardia so I'd say she's out of junior-scoring mode (she's certainly less juniorish than several of the Russian/Japanese skaters). I know you disregard the scoring but if we're talking about rankings, eventually you have to pull your head out of the sand and acknowledge that she's getting the scoring that's worthy of a top 10 skaters (of course, whether you'd agree that she deserves it or not is on you), but the judges are on her side and tbh she has shown a lot of improvement.
And
Matsuike better than Liu?! Is this the same Rino Matsuike whose best international score isn't even above 200 and placed 16 points behind Liu at NHK - where she scored (on home ice) PCS personal bests of 30.92/62.06 compared to Liu who has scored above 200 in every one of her senior internationals, and has PCS personal bests of 33.28/69.20?!

C'mon, tell us another one!
Oh, and yes, there are Canadian skaters - no top contenders atm, but Schizas did beat Kawabe at SC earlier this season, and also beat Miyahara by 13 points at the 2021 World Championships, mind you.