Hee-hee - that's funny!
We do talk a different language here - and we talk it fast, too!
Back to the OP's question - when I was getting my tractor I was limited on the size of Rotary Cutter I could handle by the max front suitcase weight available. That was before I added the FEL. So then the suitcase weights got scrubbed and the "useable" weight capacity on the 3pt hitch went up a lot with the FEL - which may also explain some of the difference. The weight they tell you is allowable doesn't assume you have a FEL mounted.
BTW - this was all based on my dealer's judgement. When I later did a moment diagram with fairly accurate distances between mass centers and axles, as well as weight transfer due to wheel torque I discovered that the dealer's judgement was pretty darn good.
-Jim