The speculations are always just speculations. If, for example, China A team does better than the B then it can be argued it was 100% sure that it was always going to be the case. If it goes vice versa then people give different estimations. 65-35, perhaps.
If looking back history, the science always estimates what has happened was always going to be the case, so 100% sure it would always happen. And things that has not happened or materialised always had 0% to happen. Well obviously that´s a spot on approach. Because everyone needs to trust. Whether it is about the science or anything really. Whether that´s called a destiny then, or whatever. But it can be always argued that what was the probability that something rather erratic did happen. So perhaps taking something between 0-100, perhaps a 50% then.
So if someone asks a quastion like here was made there always is a some kind of case. Asking that why China has A and B teams. So it isn´t necessarly sure that A does better than B. If an underdog wins people throw the science (and a destiny) out of the window, and starts to ask questions, and starts to take the rather mathematical approach. The mathematics always just tells how things are, but never give any answers why things has happened. Or to give any hints about the reality.