Basically he is correct.
In late 1980s Fleetwood tried a model that was a little higher on the food chain, and called it the Eleganza series in both Pace Arrow and Southwind. It was the same motorhome except the interior was upgraded with things like better fabrics, cabinets and appliances.
This was a successful adventure so they decided to go another step and make it stand alone model, the Cambria. It was a Pace Arrow Chassis but all above was upgraded.
I bought a 1991 Cambria and it was a great machine. I ran it over 9 years and 65000 miles. I got it at a huge markdown to boot as the economy was not good and they could not sell them as planned in the 1990-1 time period.
Then the company that was making Coronado went belly up and Fleetwood acquired them and they took the interior of the Cambria and put it in the Coronado. Nice cabinets, fabric, appliances, etc .
Another factor was that the Elegaza/Cambria series was a low profile but the market was rapidly switching to the basement models, with Pace Arrow and Bounders.
Fleetwood was a good company in this time period and put out lots of good units. Of course, you find individuals that have complaints, but your Coronado is a good machine built by a solid company. I was very pleased with our Cambria. In fact just last year I met a fellow with a Cambria one serial number from mine, he was the orginal owner and it was still running strong. He had been to Alaska in it three times and had over 135000 miles on engine and transmission without any major problems.
That is a little history.
Bob