So what was the scam behind BB listing half its HDTVs as "class"?

Been looking at decades old BB black friday ads here:

http://www.bfads.net/Black-Friday-Archives

And all of a sudden in 2008 Best Buy started offering two versions of seemingly every HDTV.

One model without the word class, one with. No explanation what it meant.

The word class never appeared in the same position in the title, so it wasn't like they were separating their TV's into "720 Class and 1080 Class" or "42 inch Class and 50 inch Class" or "Flat Panel Class and CRT Class" or even "Plasma Class and LCD Class".

Sometimes they'd word it like Panasonic 50" TH-50PE8U Class 720p Plasma HDTV

Oooh, a PE8U class... my Sony is only a PE8T class...

They'd list "Panasonic 50" Viera Plasma 720p HDTV", "Panasonic Class 50" Viera Plasma 720p HDTV", "Panasonic 50" Class...." etc. One with Class right next to a model the same size from the same company without the word Class.

What gives?

Back then the manufacturer's Listed Brand/Model followed by a Screen Size with the word class. It meant the TV fell within a size range that was classified as 55". So lets say the tv was 54.0 diagonally and a 55" Class was classified as 53"-57" (I don't know the ranges this is just an example), it allowed them to call it a 55" CLASS even though it wasn't a true 55".

Thanks, dude.