Good job cherry picking the most generous appraisal, although you got the numbers wrong. (It was actually a hair under 1 in 3 chance). But most experts laughed at the idea of Trump winning the election (or the nomination for that matter).
From that same article:
Liberals have tried to comfort themselves with the knowledge that FiveThirtyEight is an outlier among the six major forecasts, and that the other five give Trump between a 16 percent and a sub-1 percent chance of winning.
I accept your apology for being wrong. It's ok! Here's some proof.
https://fivethirtyeight.com/features/donald-trump-has-a-20-percent-chance-of-becoming-president/
http://elections.huffingtonpost.com/2016/forecast/president
And then the same thing over North Korea, which is turning out fine. Now apparently tariffs are bad, even though we have them lower than almost anyone and they don't seem to be hurting other countries, but we need to listen to those genius experts, right?
The good news is, we don't need to debate, it's going to happen and then we can see the results. My prediction: The naysayers will be wrong again just like everything else with the guy.