If you're going to needlessly nitpick, at least be correct.

It's 1:3.

difference between 1 percentage of the datapoints.

Yes. It looks like slightly less than 2% vs. slightly less than 1%. The statwing dataset for companies shows 80 companies with an average of 2.38 founders, meaning there are 190 founders in the batch. So I think it's 3 39-year-old-founders vs 1 each at nearby ages.