Chinsese Players
According to what I heard, within the matches inside Chinese team, Chen Yu has the best overal records against his teammates in trainning. Chen Hong is the second best. Bao Chunlai is the 3rd, while Lin Dan just the 4th, and Xia Xuanze is the last.
But once playing at international opens, things could be very different. Chen Yu is very sharp, very fast and very powerful at attacking. Once he knows your style, you probably could not resist his attack. But he cannot read you correct, he will be in trouble. So in order to defeat Chen Yu, you'd better avoid playing with him or changing your style often. Then he will be confused himself.
Everyone knows Chen Hong is the undisputable world number 1. His problem is his foot work which looks really awkward and clumsy.
Bao CL is good at almost everything. His problem is his mental toughness. My impression is that he is still like a kid, his IQ and EQ still stay at teenager's level.
Lin Dan and Xia Xuanze both have very high fighting spirits. But they really don't have much heavy weapons. Lin Dan's net play got improved recently. Xia's good at unexpected sudden smash. But these skills are very useful at international tournaments because two sides didn't play each other often. But when two parties know each other longer, these tricks will not be that useful. Hendrawan was very good at tricks, and they worked most times to non-indonesia players. But when Hendrawan played with his teammates, for example, even Rony, his tricks did work anymore. That's the reason I am still surprised that Hendrawan got a World Champion finally.
So in the MS final, Lin will try to confuse Chen at first, but once Chen can load his attack, Chen will win.