While certain qualities will get one elected - these qualities are not necessarily good once one is in office. (Sometimes the boss has to be a dick.)
Trump has no such social/political/cultural obligation.
Trump can be Trump.
(If asked a question, Trump will give an answer - even if he's wrong. But I guess when people are uncertain and afraid clarity is better than ambiguity.)
And when it comes to Vladimir, I think that many think that Obama may be a bit too soft.