Number of people who have called the station requesting "We Built This City" = 0. Station still plays it anyway.
Using requests as a measurement of anything is dangerous. It's a sample where
n=1 and totally unreliable.
I know of many cases where a competitor hired young people to call and request songs we knew were stiffs.
It only does well on the test because on the test they don't force you to listen to the whole song (although any 15 second slice is bad enough).
That is not the way a test works.
First, in the method used from the mid-60s until online testing was made available, hooks are 8 seconds. When scoring is by a hand-held "meter" or dial, by the fifth second, 99% of people have scored the song. The one that takes 7" or so was taking a sip of their soda or coffee...
Second, if the hooks are too long, participants get fatigue and stop giving a broad range of scores.
Today, we give more of a song. But it cuts off as soon as a score is entered, and that is about 4" to 5" when users are on a tablet, smartphone or laptop.
Third, the question in a music test is "how much would you like to hear the song on the your radio or smartphone
TODAY? It is no "how much did you used to like that song" or anything else on past preferences; it is about today, now.
Oh, and I say this as someone who has liked Jefferson Airplane and Jefferson Starship in all of its configurations, including the very poppy Starship. Micky Thomas is a great vocalist as was Marty Balin who preceeded him. But even good groups produce a clunker or two. The Beatles gave us Revolution #9 on the vaunted "White Album", which is eight minutes of pure noise.
On the radio we play songs, not artists. Each song is evaluated on its own. Of course, a favorite artist helps make a song do well, but even if the label to the "Stairway to Heaven" version we all know read "Barry Manilow and Donna Summer" listeners would still vote for the song.
"Radio" whether on FM or a stream, is based on how much listeners like what is on the air at the moment. We don't program Fleetwood Mac... we program "Go you own way".