This is from the 1.02 patch download page.
http://www.totalwar.org/#newsitem1006888978,22720,

1. All units have been reviewed for balancing. Major changes have been made to gun units and cavalry, but literally every unit has been looked at very closely. There are now separate default stats for online and offline play. In online play, Mongol HCAV and LCAV now have 48 troops instead of 60. This is a major improvement in the balancing for online Mongol battles. In offline play, all units still have 60 troops, but their other statistics have been vastly improved as well.