Centurion sold a wide range of road bikes in the USA between around 1974 and 1989. Looking through old bike magazines and books, the models described are low mid-range, middle mid-range, and upper mid-range. Even the cheapest Centurion road bikes were a step up from the Schwinn Varsity, and similar entry level bikes from Huffy and Columbia. Those were 40 pound bikes, and even the cheapest Centurion of the 70's weighed at least ten pounds less.
But, only one or two limited edition models were of "pro" caliber. Centurion's bread and butter models were the road bikes using Shimano 600 drivetrains, and the even better Sun Tour drivetrains, combined with high quality Tange cro-moly frames and forks. Those bikes, including the "Dave Scott" models, weighed just a pound or two more than the elite bikes of that era, yet sold forabout a half or a third the price of a pro level bike with all Campy components.
Oddly, on E-Bay, Centurions tend to sell in a similar price range. The low-end Centurions that sold new for $150 sell for about the same price as a Centurion that sold for $600 new. It seems that customers lump all Centurions together as "cheap" bikes, and miss out on the gems, such as the Centurion Pro Tour 15, and the Dave Scott models.