Why is it so difficult to find radio add dates?

[djea92]

Why is it that less popular artists release their singles through HitDisc or Play MPE vs the bigger artists having their labels reveal add dates on All Access/FMQB? I had to dig deep to find out that Panic At the Disco released Emperors New Clothes to rock radio in the UK and Death of a Bachelor in the US a year after the album was released. Another example, Blackbear and Mike Posner pushed "Wicked" (mansionz) through Play MPE. Why is promotion so convoluted? 

[EvanJ]

It's not the same as adds dates, but www.allaccess.com/mediabase/q/report/jump/format/A2/panel/R and related pages have Spincrease and Taking Off for each format there is a chart for.

[leonagwen]

Go on FMQB they give upcoming adds dates.