I guess neither you nor Trump (and Dr. Carson for that matter) understand how a caucus works. It is convincing others to support your candidate, not just casting a ballot. It’s not finding a magic vote-a-matic in a trunk or a ballot box in a closet.
Basically, Trump is saying that the people on the ground somehow cheated him, when he had no one on the ground to caucus for him. So in effect, you guys are saying that Iowa cheated Trump out of a win when he was barely above a third place finish, and your using Dr. Carson to perpetuate the lie.