I think, the problem with Fairy's resistances is that they all happen to be weak to Ground. If a Ground/Fairy comes around, it's going to do very well since it's are almost unresisted. If it has Mold Breaker, the last of things that can switch in is reduced to two: Skarmory and Crobat. Rotten-Heat, Bronzong, and Wheezing are the only others that could if Mold Breaker (or Air Balloon) aren't factors.
This is our Fairy/Ground http://en.wikipedia.org/wiki/Pink_fairy_armadillo Please make it happen in Gen 7 Gamefreak
Freiza may be cool, but his brother is..... COOLER(get it?) 3DS FC: 0645-6947-9076 Steel Safari:Ferroseed,Fortress, and Klefki