A long bed will track better, that much I know. I might be biased, but I'd say the LB would have the best weight transfer, just because there is more weight shifting to the rear. But honestly, I don't have a problem. When I launch my truck from first gear there is just this little chirp of the rears and then they stick like glue. MY friend Ranger I always race around with just spins the tires horrible when he gets on the gas. Of course, I have 80s Vette rims with huge meats in the back.
And 300 pounds of sand for winter.