Over all the same. CAs has pre upgraded gearbox and parts, where TM shoots 280 & CA at 300-330 FPS. TM has reputation and greatest of quality control. Both take same batt. size, gearbox, same style hopup (not exact same)The Biggest difference besides looks is, working on the gun. About 85% easier to work on G36. Both have restricted (internal) batt. space for some upgrades. CA is also a heavier reinforced plastic. This may seem to start looking one sided, but go with what look you like and you'll be a lot happier. Remember you can almost do anything with any AEG, it just might take a little more time, or money, or both!