I think the problem here is that we are all talking about different things. A flat beach or flat sand climb/hill/dune = power to weight, grip (tyre footprint size) and clearance. It makes no difference at all if you have lockers or not in sand (I like to think it does, but tests have proven otherwise) Well. Technically thats a lie if your running airlockers, as it negates your lsd into an open centre (Rear).
But, We are talking about ALL the things we have seen on a beach/inland track that your car just cant get through. Nothing personal. If you stick to your same old tracks and beach runs, you'll be fine.
Say your going along a narrow inland track and come across a big sandy 600mm hole on your passenger side at the bottom or midway up a hill. The hill will elliminate any momentum you have. You are not going to make it. And if your get pulled through your are probably going to sustain some front damage. I would go as far as to say you wouldnt make it if the hole was 400mm deep. Seen it many times before. The inland tracks arent always soft sand/mud and rut out.
Now imagine it was a narrow track (1 car wide and 1 way). The guy infront of you is long gone and there are heaps of cars pilling up behind you. What are you going to do then. Thats the part that pisses me off.. And makes me passionate about my posts and advice. IM SURE ALOT OF GUYS WILL AGREE..
Im not proud to say I end up having to go bush and knock a few trees down just to get infront of the guy and drag him through. Then I see a tear in his eye as the front gaurd is cracked and he has some how felt bullied. But unfortunately if he cant pull to the side there is only 1 way out.
Everyone who wants to go 4x4ing should go out to there local tracks and area's and test them. Find their limits and make their adjustments. I cant stand idiots who buy a 4x4 and then go out untested, inwich the above happens. Not fun for anyone.
But thats why we have 4x4 clubs, and this forum and meet and greets... To have fun and learn safely..