“Well than Trump is the political novice of all times, if you are using the correct definition of novice.”
The correct phrases are, “of all time” and, “well then” not well than.
The answer to your premise is, Yes and No. Yes, he has less in the seat time in actual office but, he has DECADES more actual experience in dealing with politicians on a practical level due to the nature of his business.
Dealing with politicians as a businessman still didn't prepare Trump for the vile backstabbing nature of his political opponents. Swampy DC politicians loved him for decades when he was giving them donations and developed amnesia once he got to Washington.