There's no conspiracy, bbonnell. The CCC varies with the floorplan and optional equipment, so it is rarely practical to quote it in a marketing brochure. They would have to give a starting figure and a formula so you could calculate it.
Just go to a Winnie dealer and look at some Adventurers. Each one will have a placard inside (usually in a cabinet) that gives the weight figures for that particular coach. But don't assume that other flor plans or lengths will be the same - they sometimes vary quite a bit for easons that are not all that obvios to the casual observer.