China undoudably has the biggest tank fleet, but I would not call it the best. The ZTZ-99 is fairly capable equal in some areas to early MBT's and marginally ahead in others but no where near the current level seen in the M1A2SEP, Leo 2A6, XK-2, or Challenger II/CLIP. The Type 96 is a joke its a pure medium tank with massively inferior protection. Even if the Gun live sup to the Chinese claims (Which I doubt) they are stall massively behind in FCS, thermal vision technology, IVIS systems, and powertrain/suspension issues and still use a T style hull. The best MBT in Asia is either the XK-2 or the M1A2SEP depending on how how you value the 3 vs 4 man crews vs the features the XK-2/M1A2 has/doesn't have vs the other.