I guess Hispanics like deeper playlists.
I will grant you that if you are comparing shares, then everyone is sinking and rising with overall listening. But I'd also say that perhaps a snooze-fest station like KLOS, which is designed for "at-work listening," would be extra susceptible to a holiday dip, more so than JACK, which with its cocaine jokes, dick jokes, and bleeped out profanity, is not really good for many offices. K-Earth, of course, is very office-friendly, but they were wall to wall Xmas, so it's apples and oranges.
I like your little stretch of saying that JACK, and KLOS are really different. You should be a lawyer. There is tons of cross-over on their playlsits. Both are essentially classic rock stations, except JACK has classic alternative and a little pop thrown in. K-Earth is indeed oldies, but they're playing the Doors, the Beatles, Elton John, the Eagles, and the Doobies too. I think most Angelenos of a certain age have all three on their presets.
Not sure why Hispanics would like to hear "Don't Stop" on 101.1 and 93.1, but would turn up their noses at hearing "Don't Stop" on 95.5. (Don't Stop, by the way, is by a band called "Fleetwood Mac." They were very popular in the 70s. Just putting that out there because I know that sometimes you are not familiar with some of the more obscure artists.)
Bottom line: K-Earth and JACK have bigger playlists, and more listeners. KLOS has the smallest, and is doing the worst. Facts are facts.
Anyway, If A to Zs don't work in PPM, then why are there more A to Zs in the PPM era, nationwide? In fact, didn't you once say, "look to see more of these features in the PPM era." I should do a search, because I swear you did.
Clearly, CBS-FM received the PPM data on their A to Zs, and then they did not one, but TWO more. Moreover, they are increasing the number of features with deeper tracks.
So answer this question: Why did CBS-FM do two more A to Zs?