Since you choose to make reference to these oft-cited publications I will make a couple of comments regarding them.
First, wrt. the UCLA study, take a look at Table 3. You will note that overall a sizable majority of women (84%) were satisfied with their male partner's penis size. You will also note that the authors choose to round this figure up to 85% in the abstract, and that percentage has been quoted thousands of times on the web. Big deal you might say, one percent, but I am quite familiar with the scientific literature having published some and reviewed a lot and I will tell you this: credible researchers don't round up their results even by one percentage point. Secondly, take a look at those women in Table 3 who assessed their partner's penis size as "small". Granted, only 6% of these 25,000+ women did so, but for those who did only 32% were satisfied and fully 68% "desired larger". So the conclusion of this study might just as well be that "women don't care about penis size, as long as it's not too small".
Regarding your criticism of the rounding in the abstract: this is something you could take up with the editors of the publication on the proper formatting of abstracts. My guess is they are correct but could have made a mistake. However, this has nothing to do with the design or validity of the research.