With this particular aircraft the airframe numbers really don’t make sense. It’s a 1814kg airframe (not including batteries) with a MTOW of 6668kg. I really don’t think it is possible to create an airframe strong enough to carry that much weight from 1814kg of material. Aircraft designers are already minimizing weight as much as possible and there is no other aircraft that comes anywhere close.
In fact, if you took the Alice airframe, removed the batteries and put in turboprop or piston engines and fuel tanks, you’d have the best performing twin-turboprop or piston-twin on the market by a very large margin. Something does not add up.