I actually disagree. As vile and unhinged and ugly as the whole Trump thing has been, if he's elected president, he'll just be an embarrassing oaf and a rubber-stamping status quo president. Trump is in reality more establishment than Cruz, who is a religious NUTJOB and a real dangerous guy to have running things. Trump is a long time member of the Atlantic seaboard money class, and in republican terms, that ultimately translates into economic conservatism, and relatively liberal social philosophies.
Cruz wouldn't surprise me if he decided that America is a Christian Theocracy, and that Muslims need to be sent to camps and that The Rapture should be the ultimate goal.
I'd take Trump and all his idiotic bluster over Cruz every time.