bobisculous. I hope you mean the Hummer H2's. I don't think the Mercedes G wagon can compete with a HMMWV (aka military version of H1) I have taken mine (well for the time I was deployed to Iraq) through some things that I doubt the Mercedes could go through.
Just ranting about all these civilian Hummer's on the road. Sure they might be more comfortable on the road with A/C, cusion seats (I sat on a Kevlar blanket in mine), power windows, etc. etc, but for true 4 wheeling taking a vehicle to its limits, the H1 gets my choice.