Fair or unfair, because Hardy is basically a defensive superstar, he got more attention. The circumstances of his case made for a more interesting story as well. He also missed a whole year, then the NFL suspended him, then he had a very public appeal process which led to the news coming up again when the sentence was reduced. Now the news comes up again because the record was expunged and then pictures came out a day later.
Add that to the fact he plays for the Dallas Cowboys which is in a larger media market than any of those other players and you get what we have now.
Oh and don't forget that he also made some questionable comments about the wives of other players and then got into a verbal altercation with a coach on the sideline which had him knocking the clipboard out of his hands and having to be restrained.