the weight of the engine on the downforce of flipping is probably the difference in these trucks at lower speed rollovers, especially if you catch air and then come down, just my thoughts since we all know the front end is heavier, im sure all that weight coming down can't help any at all.
Someone with a welder and some steel could probably fab up a pretty good rolloever device inside the cab, im sure it could be done, guess piece of mind is priceless as im sure someone has one in their truck.
The in bed rollover bar is a great idea as long as you have one that won't bend or crush upon rollover, then again you sacrifice bed space to. . Hadn't been for that little white car this wouldn't have happened im guessing so leave it to an idiot to cause a accident. .