I agree to eliminate any variables the trailers should be exactly the same in which the aerodynamics attribute would be the same. Having said that the guy at the beginning of the video states each truck will be pulling 12k lbs and IMO the two trailers behind the Chevy and the Dodge look to have a more aerodynamic front end but I could be wrong.
The common denominator in these type of video's that I observe is generally the GM and Ford guys (not all) usually stay quite and let the data or video speak for itself, and the Dodge boys call all kinds of fouls and excuses. Is this what year's of frustration will do to you? :W But I could be wrong? :B
Reading all the previous hoopla I'm sure there's more to come.