The obvious difference in these situations is that Kurt was never arrested, charged etc. Nothing. And there never really was a "case" to even fall apart. That entire fiasco of a trial was over a protection order. Why Kurt even bothered defending the order is still one of life's great mysteries. He should have just said, "fine, issue it, I don't plan on being anywhere near you" and that would have been that.
And let's face it, the only reason he was even suspended was because the Assassin did a full blown media tour (Good Morning America, Fox & Friends etc) in the days leading up to the Daytona 500. Definitely the kind of behavior we often see with victims of abuse, amirite?