Trump:
School: Fordham and Wharton Business.
Experience: None in public office. No law degree. Took over father's business.
Obama:
School: Columbia and Harvard Law.
Experience: Lawyer. Constitutional law professor. State senator. U.S. Senator.
It's not even close. Trump is wholly unqualified to be president.
Romney is much, much more qualified than Trump. Yes, Romney had a privileged upbringing, but he's actually served in a capacity that prepares one to be president. Trump has not the first clue as to what it takes to be a politician. Many may think that's a good thing, but it's not. The U.S. government is not a business. It cannot be run like a for-profit business. Selling high-end real estate to very wealthy clients does not in any way qualify one to be president. There is no question that if elected he would be the least qualified president in history.
By your criteria, Hillary is more qualified than Trump, Cruz, Rubio, Carson and Fiorina. You spit the name Bush as a cobra spits venom, so we know that's a no go for you.
Seems to me you'll be voting Hillary regardless in the general election. That's probably why you defend Obama so hard, you thought he was qualified when you voted for him too.
Your idea of "qualified" and ours, aren't even close.