I actually do not think that is correct.
RR has been at 1.8 forever. I am fairly sure there is confirmation out there that it broke 2m a year or so ago.
As did rookie.
PAB and BB are guesses until someone comes with receipts from gaon, and they tend to do that only after requests by mail or at milestones that they publish.
here is how they are guessing these numbers btw
And they are actually higher because since gaon went to 200 on the DL chart RV charts songs every time on monthly DL.
They chart MUCH MUCH higher in DL than in Streaming.
Revelluv do not stream no matter what platform they buy.
this week all that charted was power up rbb really is a train wreck gonna sell worse than OOTN.