Hannity's on radio and radio has nothing to do with the ABC TV News division.
I know that, but he is employed by the same company and did the research that said that this is an untrue claim on his employer. When I have first hand info like that (i.e. I heard him myself on the radio) compared to some column who is quoting a third source ... Hey, maybe Hannity is wrong but until I hear otherwise, I have a first party ABC source saying something opposed to a third party reference.
In net it is best to get another verification - there is just too much untrue stuff floating around and the media is doing a terrible job of verifying it.