Research shows that in masturbation there is NO DIFFERENCE between men and women in the time required or the capacity for pleasure.
That women have a hard or tricky time achieving orgasm is A TOTAL MYTH. If the standard of penis vagina sex is the standard then equality of time and pleasure goes down.
The structure of the clitoris is similar to the head of a penis but there is a clitoral structure on each side of the inner vulva similar to the shaft of the penis.

After the age of 60 there is a slow decline in the pleasure response and a time increase in both sexes.

The big takeaway from this research is that there is an inequality in the belief of different responses with orgasm which may cause some women to fake it and men to remain stupid with a myth.