China has been catching up with the Western technology for the last three decades and now time has come where chinese are close to catching up completely. The good news is once it catches up it will bypass it just by sheer momentum in the next decade.
Just imagine year 2020 when the US and its Western partners will be behind the Chinese technology. Russia may want to hitch its wagon with China so they might not be left behind.
I think the US will still be ahead by 2020, but China should be around equal with the Europeans and ahead of Russia by then in military technology.
Around 2030 is my estimate of China equalling US military technology.