Only one hasn't paid federal income taxes in two decades. Only one claimed to donate millions annually while donating less than $10,000 over a decade. Only one used his charity to pay off the mafia and settle legal disputes. Only one wants to ban Syrian refugees subject to genocide. Only one asked for Russian assistance in hacking the American election. Only one is going on trial in November for fraud and December for rape. Only one choked when he had the chance to demand the Mexican president pay for his wall. Only one declared bankruptcy multiple times. Only one stiffs small businessmen regularly and Dares them to sue for payment he promised. Only one is encouraging his supporters to intimidate minority voters at the polls. Only one encourages his supporters to commit felonies and engage in voter fraud. Only one wants to torture prisoners. Only one wants to sue unfavorable newspapers into bankruptcy. Only one wants his opponent disqualified from running for president so the election is handed to him. Only one encourages his supporters to assault protestors. Only one had made it a campaign pillar to imprison his political opponents. Only one has announced plans to abandon NATO allies. Only one attacked a gold star family. Only one has sexually assaulted more than a dozen woman.
Only one has been accused of rape in court multiple times. Only one has claimed to be the only person that can "fix it." Only one spent a week calling miss universe a fat pig.

And only one thinks it's a good idea for a few dozen more nations to get nuclear weapons.