No idea if this is why but the back of the IH blade sub frame attaches probably 6" further forward on the GT vs the SGT. The Haban blade sub frame connects to the Haban mounts closer to the rear wheels. I think the longer wheel base combined with the sub frame attaching closer to the rear wheels likely helps. Also i think my 2072 is geared lower than the 1810 i have to compare it to in my example.
I don't know if any of this is really it but maybe it's a combination of all of these factors?
Someone should squeeze a 42" IH blade on a SGT and do a scientific test to see if it's the Cub or the blade that makes the difference!
