The H2 is bigger, inside and out. It has better off roading dimensions (at a glance), however, the RRS fords 7inches deeper in water. All in all the two are very comparible.
http://www.hummer.com/#/AMERICAS/us/
http://www.landroverusa.com/us/en/Ve...t/Overview.htm
I dunno, I hate to say it, but I like the RRS.
But yeah, go test out the H2, it will be something you are more used to.