BBMAs nominations are criticized on its overall depletion within it's eligibility period like:sales,stream,longevity(chart performance) on the charts. BBMAS is not PCAs and we can't esimate the ranks or nominations without checking actual stats of other artists. ++++

We can partly evaluate that from bb year-end charts or nielsen reports. bb year end
https://www.billboard.com/charts/year-end 
nielsen for 2019
https://static.billboard.com/files/pdfs/NIELSEN_2019_YEARENDreportUS.pdf

Do keep in mind that:

BBMAs eligibility period is 23rd March 2019 to 14th March 2020
MOTS:7 was released 21st February 2020
So MOTS:7 barely got to be on the chart for 3 to 4 weeks.

Additionally just because you found something in these charts that doesn't mean BBMAs will be exact to it cause tracking period is different.When BTS won top group they were#2 on BB year end charts. As for 2019 we were#2again.