Really, when it gets down to substance, who can take Donald, the Human Fraud, seriously?
Branson is a serial entrepreneur with a record of creating businesses. (Not all of which successful, but still.) Trump, for the most part, would be nothing with political bribes, organized crime connections, screwing of lenders, contractors and employees, and serial bankruptcies. Neither The Apprentice nor the Trump licensing would have happened if the preceding had happened first.
In other words, Donald advising Branson is to laugh.