Howdy Tracy,
I'm taking a guess here but I think the measurement is taken in the middle of the vehicle where it is highest. If you look at the first pic . and look at the left rear wheel you can see parts down lower. Thats where the measurement should be taken. IMHO.
Overall this is a nice vehicle. I have no problem with the vehicle just the way I think they measured it. By the way that is how they measure the Hummer. That's how they get 17" of clearence. But if you look under them their A arms come down to about 8". Everyone else measures the low point which happens to be the diff. Look under a Mog and you have 16" of clearence. This is a pet peeve of mine so I had to rant. I hope you took it as constructive rant