i couldn't agree more. bought a 2015 26BHS back in February. at the time, i owned a 2013 Silverado 1500 Crew Cab. the towing capacity on it was 9600, and the GVWR on the 26 BHS is 7750, so i was well within limits. i had no idea how much the truck would struggle to pull the weight until i towed it home. our first trip was about 30 miles to the campground, and i didn't like how the 1500 pulled it AT ALL. we are planning a trip to Montana/Wyoming this summer, and i had some major concerns about how the 1500 would pull through the mountains. i happen to have a friend who is the general manager at the local Chevy dealership, and he let me borrow a 2500HD Duramax so i could test it out pulling the new camper.
the difference was DRAMATIC. long story short, the local Chevy dealership didn't get their 2500HD Duramax back