I came across a thread on Benzworld 11 years old titled "G-Wagen vs Land Cruiser". Pretty interesting how these types of questions recirculate every generation.
Here is the last post from January 2002 by someone with a lot of experience supposedly testing them, etc in varying environments:
"Koly, I run both a g-wagen and an FJ-80 in my driving school (as well as a d-90, Disco I, Disco II, LC FJ60, LC FJ40 and a LC 100). I have also experienced both vehicles worldwide on expeditions, etc. To cover a couple of comments made earlier. The LC has better articulation than the g-wagen stock and with quick disconnects on the LC’s sway bars the articulation is very impressive (better than my D-90 or Discos both with OME suspensions). <br> G-wagen sway bars are very stiff. Both vehicles are very tough and reliable, the LC is much easier to work on ands parts are much cheaper, God help you if you need to do a repair on the axle of a g-wagen. <br> <br> In terms of strength, I have found that the combination of the mass and torque converter on the LC ensures that axles, safts, etc break less often than the G-wagen’s. Again, this is very rare in both if driven well---not like a Land Rover). The power/torque of the LC (read, low-end-torque) is better for off-road use than the g-wagen (except for V8 g-500 and V8 diesel). If you can fine a LC 80 series with the turbo diesel than jump on it---bests off-road engine I have experienced). For instance, in Iceland where they run 38� or44� inch tires, they would never dream of do this on a g-wagen without upgrading the axle, while they stay with the stock LC axles.<br> The under-carriage of the g-wagen is the best design I have seen to date, everything is up and out of the way, diffs have fair clearance (less than LC stock however). The approach and departure angels of the g-wagen are better than the LC. However, the LC has a better break-over angle. All around visibility from inside the g-wagen is better than the LC. Both vehicle are very solid and I have found that LC around the world are used more often off-road and therefor tend to get more abuse than the g-wagen-- who’s owners fear the costs of repairs. My LC is as tight and solid as my new g-500 and it has 90,000 miles (much off-road).<br> Modifications for Off-road are much easier to do on the LC, less expensive, and with many more choices. One can get at least twice the articulation out of a LC with no other changes than springs and shocks, while the g-wagen needs break line extensions, removal of sway bar, and frame modification for drive shaft clearances. Both stock vehicles have “things� on them that need to be taken off for better off-road use, plastic stuff. LC will take larger tires (bigger foot print) than G without problems.<br> <br> G-wagen gearing ratios (better engine breaking) are superior to the LC stock and the g-wagen’s center diff can be locked in high, while the LC’s cannot---very important in sand and snow and sometimes mud!!<br> <br> Diff locks are great on both, the LC has electric lockers that are fantastic, the G’s are mechanical (very reliable) or air (I do not know how tough these are yet, but I do not like that the compressor runs contently while any of the three diffs are locked)<br> <br> It comes down to how much money you have and what you really want to do, and most importantly which one you would be most happy with over a long time. Here are the points:<br> <br> G is more money to buy, repair, and modify<br> G is more interesting (rare)--closer to unique (worth a lot in my mind)<br> G has better approach/dep angle<br> G has better viability<br> G has better under carriage clearances<br> G-500 very powerful and fast<br> G better gearing<br> LC power is better on or off-road (G’s V8s excluded)<br> LC has better articulation<br> LC better break-over angle<br> LC modifications are simple<br> LC modification choices better than G<br> LC parts available anywhere you can think of in the world<br> LC better on the road (not by much over g-500)<br> <br> Sorry for the long note, but I hope it helps. I have modified both and run then both many times. I find them both great, but if money is at all a concern, then the LC wins easily. If money is not a concern, the G is like a great combination of a LC, Land Rover, Jeep…---and it is hand made! <br> <br> -OEX (Bruce)<br> <br> "
http://www.benzworld.org/forums/g-class/167280-g-wagen-vs-land-cruiser.html