With Music Station's return they aired the lists of the best selling artists of all time from the sales up to the end of the previous year, 2011. It probably is no surprise to see Johnny's doing well in the group category and even getting on the male solo list.
01. SMAP - 32,730,000
02. KinKi Kids - 25,210,000
04. Arashi - 21,590,000
10. Hikaru GENJI - 12,220,000
11. V6 - 12,210,000
16. KAT-TUN - 8,450,000
17. Masahiko Kondo - 12,670,000
I don't think it's surprising to see SMAP at the top of the list if just for the fact that their career has lasted so long and they were around during the peak of CD sales. It looks like in a few years Arashi could possibly be able to surpass Kinki Kids, though they will still have a long way to go to beat SMAP.
It is rather interesting to see that Matchy is the only soloist on the list. I cannot help but wonder if any of the recently debuted soloists will ever be able to make this list.