Well, I can tell you one thing, the last thing John is a fanboy... if anything he is a VW and Land Rover fanboy. He has nothing but a critical approach to the 4runner which is where he got his appreciation for it.
and not to get too much into this, but making a frame stronger means nothing when you make the exterior weaker... which is why any car from the 60's would rip thru a new 4runner like its butter... the actual body of a 3rd gen should slow down another car signifigantly before it hits the frame...
I find it funny that new cars need more side airbags and safety features when their early predecessors needed none of that. all that was done was sacrifice weight and gas mileage to make a lighter plasticky car. And this is not just a Toyota thing...
when was the last time a metal bumper was put on a 4runner?? 3rd gen... that bumper alone improves the strength of the vehicle.. just ask the 4th gen owner in my apt complex with a busted up bumper and mine that has run into rocks and is still fine...
just my observances though