I have been off-road (Bass lake and Hennops) with my brother who owns a TDI and never ever once could the Landy do anything better than the Patrol. He though, cannot say the same. I agree with Peter on the type of obstacles that Landy's find more difficult.
I have however encountered Defenders on the local trails frequently and I am sorry Koos but I find myself in disagreement with you where articulation and traction are concerned. We idle up and through obstacles where the defenders either just won't go or struggle badly. The obstacles in question are muddy cross-axles and also loose wet shale with fixed steps.