Hmm.. doesn't convince me. Even if you would have rock solid empirical evidence, women still would not admit that they envy penises. Why should they, after all? There is nothing to gain from. Nothing which is inspirational or bringing anyone forward in his maturation or having the feeling of accomplishing an important thing.
The fact that you drag around such envy from childhood all your life without knowing about it and then justify the adult negative reactions of women towards men with such a penis envy leads to completely fruitless, hostile, emotionally charged debates, where in the end you have learned nothing really interesting. It's just the wrong focus if you ask me. After all, the associations women do have on the word "Penis" as adults is really something you should take into account (to accept penis envy and then let it into me during sexual intercourse seems somewhat crooked).
And you're talking to the wrong person about envy. I am so not jealous at all of the "more" of the others. On the contrary, I think that so many material things are quite a burden. I want to free myself from them and live as easily as someone who just ties up his sack and sets off on the journey with it. ... It will take a while until then, but maybe one day I will make it ;-)