Hello.
First I must say that I certainly agree with the base idea, that men and women vary in size. I on the small size.

I will say that from my own personal experience. It is all about the a man takes care of that woman during sex and if he knows how to use what he got...whether it be big or small.
I experienced a man that was very blessed in the pants...but did not please me with it. It was disappointing and a waste, but at the same time he lacked the skill of "workin" it.

Then I had experienced one that was a "one hander".

This person moved and handled their motions very well and made it a wonderful experience.
I have seen those experiences in the opposite as well...
I truly feel that besides the fact that some sizes will fit the other better...regardless of what your trying to fit...its not being used efficiently in arousing the other person.
So like I normally say, "Its not about the size of the waves...its about the motion in the ocean."

...combinations of friction and "hittin' up them walls"...LoL