The difference comes down to which peptide they chose, how they dosed it, and whether their protocol actually matched the biology of abdominal fat
Haugaard SB, Andersen O, Hansen BR, Orskov H, Andersen UB, Madsbad S, Iversen J, Flyvbjerg A: Insulin-like growth factors, insulin-like growth factor-binding proteins, insulin-like growth factor-binding protein-3 protease, and growth hormone-binding protein in lipodystrophic human immunodeficiency virus-infected patients
"UpWard" has her order him to carry her instead of her simply walking despite his age, and later dismounts him by shoving his head out of her way
Again, this is an indirect comparison, but it points in the same direction as the average weight-loss results