The Tiger like yours appears shorter in the cabover area compared to a truck camper and most of the campers now have basements. Add to that that your Tiger is also built on a GM which is shorter as well compared to Dodge/Ram/Ford.
I wouldn't be surprised to find the overall height being 2 - 2 1/2 feet higher with a truck camper on a 4 wheel drive Ford/Dodge/Ram. My overall height is about 12 1/2 feet.
It's hard to compare your Tiger to one of the larger campers like mine. Looking at the Tiger site, they are building bigger ones though and they appear to have some on Ford frames and with heigher cabover areas.