I think this is one of those cases like the claim that a land rover defender can managea bigger load than the land cruizer pickup (legal sense spoken). Aparently it has something to do with the braking power and the way Toyota registered the vehicle when it was patended.
Any way what a load of crap

. As a farmer, and driver of boath, i will sure as shit rather take a bigger load on the cruizer than on the landie. They are both great vehicles, but have diferent qualities.
I cant believe they would claim that the GS1200 have a lesser payload than the GS 800. But like i say, i think its one of those cases

.