1) Only done on 16 girls. Sample size is small.
2) More than 30 years old. Changing mores.
3) Women are likely to fear random men who approach them, the reverse is not true. This experiment should have been done differently: they should have achieved some rapport/comfort with the mark and created some sexual tension, and then asked for sex. My guess is that at least a few of the women would have responded favorably in that case.
One Night Stands happen, at least according to popular mythology. So obviously women can be convinced to have sex. But I think what you describe would be a completely different experiment. For starters, would you assume that any men would be able to "create some sexual tension" with any women? Otherwise your setup would already contain a lot of bias.
