Why is SNSD considered the top girl group of second gen when the last year they had a song get into the top 10 for the Gaon Year-end digital chart was 2010. In 2010 for reference Miss A had the top charting song.
Groups like 2NE1 and Sistar ended up on the end of year chart for multiple year afterwards.
Is the physical sales the only thing that really makes them much more popular in some peoples eyes?