Unconditionally had like 5 performances on TV and year end sales. Birthday had a performance and decent airplay, still it didn't sell as much as it should and the video views and streams are horrible.
This Is How We Do will outpeak both in streaming and views. You know it didn't chart higher on Billboard just because radio wasn't here for it. Still, it will sell about the same Funeral sold.
It's a theory, if this was released after a smash hit... could be better.