Putin has been given credit on several occasions for taking Obama by surprise with his changes of course in Syria and Ukraine. He can do this because he isn’t accountable to anyone. When you’re the leader of a democratic state and the rest of the world has a big stake in your actions, life is very different.
Trump has made it clear that he intends to use his own unpredictability as an asset in negotiating his amazing deals when he becomes President. That works if you’re the CEO of a series of closely-held companies, but not as President of the United States. The rest of the world would initially go bonkers, and then look to the Chinese for stable leadership. You can be certain that they will be happy to oblige.