Just thinkin about a few things:
Land Rovers have a selectable "Terrain Response" system, where you can flip a switch for different road conditions: Rain/Snow, mud, rocks, etc. This system changes vehicle dynamics so that you maintain maximum traction for different conditions.
This is probably why your LR was "superior" in that aspect. The transfercase and ESP systems were prepped for slippage, etc. so the vehicle was safer in the slick conditions. It doesn't need slippage to react.
The mechanical system on Jeeps: QT-II, reacts to slippage and transfers torque and brake pressure to counteract the slippage. This is why you'll feel it more than an LR3.
I guess you just have to get used to a mechanical system. I went from a selectable 4wd blazer to the full-time Jeep when I bought my ZJ and it took a while to figure out the system and be comfortable with it.
Just give it some time. And if you still have those SR-As or HPs on there, get a good AT tire and you'll notice a significant difference.
You can lift the LR3 with the flick of a switch....unreal.
My head is spinning after looking through all of the electrical systems that control those things. I'd hate to wrench on one, or own one for that matter, I'll tell ya that much......