Here is an interesting article that compares Chinese and Japanese military capabilities that shows the quantitative advantage the Chinese have, but the Japanese maintain a qualitative advantage in regards to capabilities to defend the disputed Senkakus, namely their naval strength:
Despite such tough talk, analysts say China’s top strategists know an armed conflict, intentional or accidental, is not in their interest and could detract from their long-term goal of expanding their regional and global power.
“The Chinese high command has got to be very prudent and cautious in terms of the launch of any kind of military operation,” said Arthur Ding, an expert on the PLA at Taiwan’s National Chengchi University.
Even without the benefit of the US security alliance, Japan currently has better training, facilities and equipment, Ding said, although the long term situation was less clear.
“Right now Japan is in better shape,” he told AFP.
Even Chinese President Xi Jinping has urged the military — which is beset by corruption, with high-ranking officers under investigation — to improve its abilities to “win battles”. (…………)
China had approximately 2.3 million active duty troops last year compared with Japan’s 247,150, the report said. China also enjoyed huge leads in combat aircraft at 2,525 to 630, main battle tanks at 6,840 to 777 and tactical submarines at 66 to 18.
China’s defence budget was $112.2 billion last year, while Japan’s came to $51 billion, according to the report. [AFP]
You can read more at the link, but when you look at the numbers this is why I roll my eyes every time I hear the Chinese complain about the supposed rise of right wing Japanese militarism when it is the Chinese that are resorting to militarism and just everyone else in East Asia is now participating in an arms race to defend themselves from China not the Japanese.