I happened to watch the Howard Stern tv show a few years ago. He had some of the female guests (I think porn stars) measure Howard and the other cast that night.
As I recall, Howard swore the average for most men (erect) is 5 1/2 inches. They read out the various sizes for the cast. I recall Howard was between 5 and 6 inches. The others I didn’t really listen closely too.
If that figure is about average then someone like J Holmes (at over 12 inches) was more than double the average male. Probably more than any woman that hasn’t given birth can handle comfortably.
Here it is. Youtube stores everything. from 1998