Since someone earlier posted two or three R&B/Hip-Hop Charts, which data is used to configure the Hot 100, I assume posting the Country and Rock Charts, whose songs and data also make up the overall Hot 100, is also allowable.
I included Rock Airplay, because here Billboard combines all four Rock sub-formats (Active, Alternative, Heritage, AAA) and ranks them, which Mediabase does not do. I left the Country Airplay out, since with Kworb.net we can change that to impressions, determine the number of stations to include (published vs all) and currents or all.
I think radio and sales will be fairly even, more or less. But streaming will be Meghan's advantage. She'll probably have a lead of 2 to 1 ratio like 12 million streaming vs 6 million.