So as a follow up in case this might be helpful to someone else, I went and weighed the Jeep today. Full tank of gas, myself the 200lb driver in the vehicle. As bonus I also had my little 2 yr old in a car seat as well as a little bit of cargo I forgot to remove in the back (stroller, few other items). Below are the numbers. This is a 2012 Jeep Grand Cherokee Overland Summit.
GVWR off sticker is 6800lbs
Scale weight is 5577.5 (Including driver, baby in seat and cargo plus full fuel and fluids)
6800 - 5577.5 = 1222.5 remaining payload capacity.
Significantly different than the sticker payload of 1050 even with a little extra cargo and a 200 lb driver.