Don't get me wrong, I'm sure the JSDF is very well trained but just because you train with NATO countries, doesn't necessarily mean your level of training is better than China's. You don't have access to PLA's training protocols and strategic planning, so to say China is inferior in this department holds no substance. PLA could be the same level, worse or better, but how would anyone know, without having full access to both sides.
USA and Western training isn't all that great. Remember, these are the same militaries that have bungled and lost countless conflicts, since the end of WW2. Westerners like to have the biggest and best guns, because maybe they don't trust themselves to win in a fair fight with a peer enemy. They use their hi-tech toys to push around minnows and weakling nations but yet still get those nose bloodied. If Japan look up to Western training as the pinnacle of military prowess, then you might be surprised that it ain't that great, against a well-equipped and determined adversary, like China.