Shoot From Hip said:So says the programmer. Try telling that to a sales manager who was just informed that a buyer is only going three stations deep instead of six the way she did a year ago when placing a buy, because her budget has been chopped in half. And try telling that to the sales manager of a standalone who just got closeted on a buy because a six-station cluster dropped its pants on the lower-rated stations in the cluster to scoop up the entire share. Your theory does not always work in practice...in the real world.
So says the former GM and GSM and NSM.
While rank may be a start point on a buy, cost per point is the deciding factor for any buy made by ratings. A higher ranked station that does not deliver the target CPP is nocked out, and the lower ranked station that delivers the right cost gets added, known as "buying around" the hogh price station. Also important is reach, part of any r&f buy where a high ranked staiton my be blown out because it does not add to the reach of the buy, even if efficient on a CPP basis.
It's not rank, it's cost per listener. And minor ups and downs in rank are averaged out by using multi-survey analysis where such things are more compressed.