I find both of these teams a bit lacking performance wise, but M/G have better elements. So, I think they will score better than P/K. At the GPF, Sui/Han (obviously) look solidly gold. B/K are likely silver ( unless Peng/Jin nail their side by sides) and Peng/ Jin are likely to be third. (they will have higher PCS , which they deserve)
I think MT/M, M/G and P/K will only factor into three medals if the other teams have a serious error or two.
I actually don't agree that M/G were underscored in GOE or PCS at NHK. A found all of their elements a bit messy in comparison with some of their previous outings. MT/M may have been overscored but M/G weren't underscored.
B/K will go into the GPF as the Russian #1 so I expect their PCS marks to go up because not only that distinction but also the fact they were flawless during the GP too which the judges will likely want to reward. If they skate clean no way will they lose to the second ranked Chinese team (even if they do skate clean) when the number one ranked team is there. Just look at last season. P/J were boosted up at the GPF when they were the sole Chinese team in competition but at worlds when S/H returned their marks went down to normal pre-absent S/H levels and they got beaten by the Russian #2 team for Bronze. And don't be shocked if they end up losing a close race to M-T/M too. There will be no China 1-2 unless B/K or M-T/M give it away.
I don't expect the Russian fed. to dump T/M (that would be stupid crazy) but I have no doubt they will start throwing more weight behind B/K due to what they have done so far this season. Not just at the GPF but at worlds too because they need a back up just in case T/M don't perform well. So I expect their PCS marks to start rising and to start at the GPF.

Speaking of which: the juniors were great as well. The talent keeps coming, Panfilova/Rylov are defo Senior material.