Once again we see one of the many differences between Trump and someone like Ted Cruz. Cruz talks about his positions and does not bad-mouth the other candidates. Trump does nothing but bad-mouth the other candidates.
Calling into account another candidate’s record is what any candidate is going to do. Personal attacks are another matter, but that is not what Trump did.
That's an unfair portrayals of The Donald. He always takes the time to remind us how awesome he is too.