According to Jane's Defence, the following is a break down of military aircraft in the inventory of the major air forces of the world.
US............3,150
China........3000
Russia.......2,180
India..........600
Pakistan.....460
France........300
Italy............227
Spain...........140
Sweden........121
UK................120
Belgium........72
So technically, China has more aircraft than Russia, where as Pakistan is well ahead of France. The source of this report is more concerned of the fact that after the recent defence cut backs, UK, is now lagging behind even Sweden. Janes Defence is often the most referable source, but one wonders regarding the above figures.