Million Reasons is an amazing song and it performed really well with little support.
AYO was a clear hit, especially after SNL and it is performing really well.
MR got the biggest exposure, if AYO had that exposure it would perform equally good. The point is what happens after that effect and which song has bigger radio hit potential.
It is clear that both songs sell when promoted, but only one of them has radio hit potential and I am giving it to AYO. However, I do want Million Reasons to shine, but I think it is not a right time.