" Wind resistance " does not factor into the choice of a towing vehicle ...
Stopping capability does ....
I have always towed with an F350 Dually Quad Cab Diesel ....
It weighs 9500 pounds on average - my enclosed trailer
on average weighs 8500 pounds loaded ....
My trailer has a V nose which does nothing to decrease wind resistance.
I have a 4:10 rear differential.
I tow at 55 m.p.h. every day ....
I can safely stop my load in most cases .....
I reduce my speed to suit inclement weather conditions ...
Look around at what you see driving down the road ....
Folks with actual road experience will drive a diesel dually to tow a trailer,
others drive a gas powered inadequately equipped light duty pick up truck.
Jim