The target demo of CHR is women 18-34 in some markets, 25-44 in others. The target of Hot AC is usually somewhere around women 25-44 as well. As we see in LA with iHeart's "wall of women" the AC, Hot AC and CHR formats all have considerable overlap and a good bit of cume sharing as well. But the demo is so attractive to advertisers, that is actually a plus for iHeart there.Their target demo doesn't listen to radio. Soft hits would do better.
Soft hits, appealing mostly to those over 55, is not going to do better unless the market has a considerable local business direct sales advertiser base.