Incorrect weight for the A400M?

[Mammer]

Hello. I recently decided to take a long flight and noticed a strange feature.

 

For some reason, the OEM is 89,993 kg, although in fact, based on open sources, the OEM is about 78,600 kg. The fuel capacity is 50,500 kg in the simulator, and the MTOW on the tablet is listed as 137,900 kg, but in reality, it is 141,000 kg. I would like to understand why there is such a difference and what causes it.