I never understood shading Katy for "Unconditionally" flopping/under-performance. After a string of hit singles, one is bound to flop at some point. It's normal. It shouldn't have been UC though, it is the best song on the PRISM.
Now wait one minute! Gaga had a string of hits up until Judas and the kats showed no such mercy. Gaga was skull-dragged to the pits for that song's performance. People like to see the mighty fall, I guess
Why isn't Say Something exploding on radio as iTunes???
Well AC is not playing it now because of Christmas, I expect it getting 1+M updates from AC after 6th January, when it will return to normal playlist programming. Otherwise it's doing good with 11 on HAC and 21 on Pop, and you can't expect for it be played on Rhythmic and Urban.
POP
22 19 A GREAT BIG WORLD Say Something w/C. A... 4582 3466 1116 28.247 +2 Pos +179 Spins +63 Bullet +1.075 Audience
HAC
12 11 A GREAT BIG WORLD Say Something w/C. A... 3010 2636 374 22.284 +59 Spins -10 Bullet +0.489 Audience
__________________________________________________ ___
POP
14 13 ONE DIRECTION Story Of My Life 7085 6499 586 42.599 +1 Pos +72 Spins -65 Bullet +0.849 Audience
HAC
26 22 ONE DIRECTION Story Of My Life 1285 811 474 9.840 +2 Pos +97 Spins +62 Bullet +0.567 Audience
__________________________________________________ ___
POP
24 20 LORDE Team 4570 3253 1317 32.776 +2 Pos +188 Spins +28 Bullet +1.055 Audience
HAC
31 26 LORDE Team 857 529 328 5.759 +2 Pos +51 Spins +13 Bullet +0.208 Audience
Alternative
4 4 LORDE Team 1924 1830 94 10.286 +30 Spins +10 Bullet +0.127 Audience
Triple A
5 3 LORDE Team 556 504 52 2.097 +1 Pos +7 Spins -3 Bullet +0.080 Audience
__________________________________________________ ___
POP
35 30 KATY PERRY Dark Horse 2665 1217 1448 24.271 +288 Spins +165 Bullet +2.092 Audience
@ the monsters shading Katy every single day. They didn't learn from ROAR > Applause and/or PRISM > Artpop. 
