Yes. It is.
Because of the 1/1 or 12/27 release, the '650k figure' that we saw was the combination of the 1/1 week and the 1/8 week
That's why it looked SO LOW. People said the same thing about MY STORY's sales.
MY STORY- Week-1 Position: 1 Sales: 574,321
Week-2 Position: 3 Sales: 194,556
Week-3 Position: 3 Sales: 190,471
Week-4 Position: 4 Sales: 38,792
See? The 4th week was after the whole combining thing