“There is a difference”
Not much. I’ll take your word for Romney’s transparent perfidy. I vaguely remember him apologizing and blabbing about a change of heart, but let’s assume that was after he was caught. Being upfront about his change of heart is only better in a political sense. It helps Trump “get in front of the story,” as they say, but it doesn’t prove he’s telling the truth. He has an obvious motivation to lie, which I don’t think I need to explain.
The best thing we can say about Trump, given the current information, is that he’s either more honest than or a better liar than Romney. Excuse me if I demure from dubbing him a “bigger man.” He very well could be a worse man, for all I know.
I watched Trump explain his “Change of heart” in an interview, when he was asked about his former belief and why he had changed his position and belief that Abortion was wrong.
http://www.desmoinesregister.com/article/20110421/NEWS09/110420064