That's exactly what I thought.
It pays for the short field performance with extra structural weight in the wing and shorter range.
But is the extra MTOW, max takeoff weight worth it?
Probably not for most civilian uses. As I recall this is a proposal for a military cargo plane in a class that is smaller than a C-130. The ability to operate from short primitive airstrips near combat zones is more important than the ton mile costs or range. The fact that it is smaller than a C-17 means a C-17 doesn't have to be used to send a small payload when the speed of a jet is needed.