Gear ratio advice 3:73 or 4:30 on Super Duty

What people are failing to understand is that you create heat....loose power when you transmit power through gears. If you want your engine tuning at say 2200 rpm you can run in fifth gear with a 3.73 rear end or sixth gear with a 4.30 and either way your traveling almost the identical speed. The 4.30 set up is speeding the drive way up in the transmission and then slowing it way down in the rear end so it will loose more power to heat and put less power to the pavement. Additionally the 4.30 set up looses the benefit that the 3.73 has of being able to shift up and drop the RPM down to 1700 when the load is very light. Unless your regularly pulling 30,000 lbs or running in very steep hills or off road where highway speeds are not attainable you don't want 4.30 gears for an RV. If you think the advantage of having a tighter turning radius out weighs having the right gears then do what you want. Does the f350 with 4.30 gears even come with the wide track front axle?