Key tool max pro does not have Prog function. It cannot read eeprom, ecu, mcu.
Key tool max pro does not have BMW and Benz immo programming function.
Key tool max pro doesn’t make BMW FEM/BDC keys and Benz keys while key tool plus can.
The max pro is great for generating and cloning chips, and setting up xhorse universal fobs and such, and even has a decent obd programming ability, but on that last one it is pretty limited. For obd programming you’ll want something bigger and better like a vvdi key tool plus or equivalent.
Keytool plus working good with BMW and Benz keys.