The ODIN database is an official US Military database for Worldwide Equipment Guide. The site itself claims that all information on the site is approved for public release.
Weight of the vehicle should be 45 tons
Max engine power should be 1200HP, maximum speed 60kph (maximum reverse speed is not mentioned)
9 round per minute (and claims of 3 rounds within 15 seconds from some other public sources) point towards a 7.5s reload between shots
Secondary weapon should be 1x 7.62mm or 1x 12.7mm roof machine gun, instead of the 2x 7.62mm currently in game
Main weapon is stabilized
These stats are directly from the link above, which are published by a trustworthy source.