What is the difference between main cabin and basic economy on American Airlines?

What is the difference between main cabin and basic economy on American Airlines?

Booking a basic economy fare entitles you to the same main cabin seat as other economy class passengers. There are just a few differences in the travel experience: Reduced earnings of Elite Qualifying Miles (EQMs), Elite Qualifying Dollars (EQDs) and Elite Qualifying Segments (EQSs) through Dec. 31, 2020.