AXS is probably one of the more robust derailleurs due to the overload clutch that disconnects the motor from the derailleur body in the event of an impact (text stolen from bikemag.com). I’ve hit mine on rocks a few times, heard the little noise of the clutch and been left with no damage. Who knows if that saved what would have been a trashed mech if it wasn’t AXS.
SRAM rear mechs in general are more difficult to break than Shimano, I think.