I'm not sure what would happen but I do have a feeling that if a K-Love or Air 1 station were to come to DFW, I don't think it would do well against KLTY or KVRK Power FM.
I live in Lubbock and we have both a k-love and 3 Air 1 stations on 107.3, 94.1, and 99.1
The only advantage K-Love has against KLTY is the fact that it would be commercial-free (when I'm in the DFW area, I get fed up with all the advertising on KLTY), however, they play the same stuff over and over again. I have never been a k-love fan and don't know if it would do well against KLTY.
Air one is more of the same. Air one in a way sounds like k-love at times. They play harder stuff such as a little bit of Skillet or Disciple, but the format is not nearly unique as Power FM's. You will not hear Project 86 or anything like that on Air 1. However, some do prefer a format thats harder than K-Love but not "too hard," so maybe Air 1 might have a chance...a better signal is definitely a plus and is something that Power FM does not have.
Something I do like about K-Love and Air 1 both is the DJs. They seem to care about their listeners a lot. But I don't think they playlist will be able to beat KLTY or KVRK.
That is my opinion. And if K-Love came to Dallas, I wonder what the people at KLUV might think. Two K-loves in Dallas with different formats would be kind of odd.