Legit, the biggest 'fraud' was when Rebel Heart debuted at #2 because of that, even tho she had more pure sales than the #1 (which got the top spot thanks to TEA/SEA).
I'd have been mad, ngl. But hey, things & industry changed, so BB got to adapt.
track equivalent / stream equivalent. basically an equivalent that transforms track sales into album sales and streaming consumption into album sales. I'm pretty sure it goes:
10 US track sales = 1 album 1,500 US streams = 1 album
Oh by the way, the fact that Million Reasons outpacing A-YO without the Hot Tracks exposure, commercials last week speaks volumes on which song is resonating with the GP more.. US and WORLDWIDE scale
Do they usually get it?
US and WORLDWIDE scale 
