Take two identical trucks,

both with bolt ons, 3000 stall and sts turbo, 29 " tall tires.

Only differance, One has 4.10s and the other one has 3.73.

I have seen the higher ratios seem to go with turbos better, although I don't understand the concept. Would the 4.10s wind up too fast not taking advantage of the low end torque curve produced by a turbo?
What is the concept?