My 1984 Lemans 12 is Champion 5. +1 It was really common for the specs on a bike to change dramatically year to year. And some bikes (like Trek MTBs), the specs would sometimes get worse. Usually, most manufacturers upgraded models over the years, so something that was high ten steel with even steel wheels in 1980 might be alloy wheels, double butted cromoly, etc., by 1984.
And sometimes (most of the time) model names that started with Grand or Super or Racer or Deluxe were pure marketing gimmicks.