I am not sure how you would come to that understanding.
I can agree that if you continued to support Bill Clinton after the whole scandal came out, then you would be more likely to cheat on your spouse than someone who stopped supporting him because of that.
But going from more likely to very likely is just a figment of your own poor logic.
There is also a qualitative difference here. Clinton was ashamed of what he did, he apologized not just to his wife, but to the nation.
Trump has never apologized, he has never been ashamed of what he has done.
There is also a temporal difference here. All the stuff about Clinton came out during his second term. People could have voted for him twice who never would have voted for him had they known about the affair. We knew who Trump was before the 2016 election, and he confirmed who he was to anyone who had any doubts by the 2020.
There is also a difference in how these things affected the nation. Clinton’s affair did not affect the nation at all. What he did was really entirely his own business, and the only person who he hurt was his wife. Trump’s actions have hurt millions and killed hundreds of thousands.
And I can see supporting a flawed person, someone who tries to do the right thing, someone who has done good for the country, but who has failed at maintaining personal morality, while still not falling to that moral trap themselves. I cannot see how someone can support someone whose actions are not just personal failings, but are failings in their ability to hold the office. Trump supporters do not support him in spite of his flaws, they support him because of his flaws. They applaud “Grab them by the pussy.” they embrace the label “Deplorable.” They condone racist and xenophobic actions by our border patrol and the actions of a militarized police against peaceful protesters.
The fact that Trump cheated on all of his three wives is not something that I would hold against them. That’s a personal matter. How someone conducts themselves in the office of the President and their campaign to gain that office, and how they execute their duties is.
I could go on as to how your equivalence is just a pathetic attempt at whining “Both sides do it”, but I think I’ve made my point that your attempt here was feckless and unsubstantiated.