Out of all the airplanes we operated, which were 172's, 206's, 207's, 210's, and the Super Cub, the 172 had the highest profit margin
As in "a rhinoceros is lighter than an elephant" (or is it vice versa?). I'll agree a C172 is less uneconomical to operate than a 206 or 210. That does not make it a very economical plane.