I did not sit in either saddle on a static stand. Both were on my horse. Yes, they are both the same size. I've had the GP version for years. It fits both my and my horse like a glove. My problem with it is that I am finally starting to jump things bigger than twigs and the GP saddle is very deep and starting to interfere over bigger fences when I close my hip angle. I only tried to jump saddle since it's just that, a jump saddle. Seemed to make sense for jumping, but I guess not.
They are two very different saddles. The jump is a narrower twist. I definitely have less horse down there to wrap my legs around than I do in the GP version. I'm guessing it's that difference alone that is letting my legs work their way more forward and slipping over the flaps. I keep having to scooch back in it to sit in the deepest spot. Rather than play the ever annoying saddle fit game, I'm going to just go back to the GP version and deal with the deeper seat rather than ride in a saddle that I would probably never feel completely secure in.
You just have to see your distance...you don't have to like it.