Those statistics have been debunked numerous times. It's feminist propaganda. The 2% number is nothing more than an anecdote presented by a female police detective during a speech back in the 70's or 80's to a feminist convention she was paid to speak at-every other citation of this statistic is a
woozle. The notion that you can accurately measure the number of 'unreported rapes' is laughably absurd.
The fact is that almost all of the 'statistics' surrounding this issue that you see are fabricated by the very nuts who depend on inflated numbers of victims for the funding of their jobs. You know the '1 in 5' college girls will be raped number (which has been debunked so many dozens of times yet still gets repeated daily by people who should know better) was derived by a ridiculously small sample size. Almost all of the individuals who the study determined to have been 'raped' actually stated specifically that they never had been raped, but by answering affirmatively to the question of whether they engaged in sex after having consumed alcohol, or if their consent was obtained after being badgered (not forced-but simply a guy asking for it over and over until she said yes) the 'study' counted them as being raped.
As for a study conducted by someone who doesn't have a bias or conflict of interest that would tend to discredit them into false rape allegations, here is one:
false rape allegations constitute 41% the total forcible rape cases.
That study is not perfect, but it is much better than a bunch of fabricated bs public relations spin by the rape culture vulture profiteers masquerading as actual researchers. Yes false rape claims do happen. They are not anywhere near the low figure of 2%. On college campuses they are undoubtedly much higher now than they were several years ago because of the federally mandated hysteria has allowed extremists to indoctrinate almost all college students with all sorts of false notions such as a drunk (but not incapacitated) female cannot consent to sex. Add to that now due to the TITLE IX based federal mandates that colleges are forced to (and girls are being coached on this at orientation) offer mandatory academic accommodations such as extensions on papers, exams, the ability to withdraw without penalty when other students cannot due to a deadline, change dorms, etc. simply for claiming to have been sexually assaulted. As soon as these new guidelines were imposed back in 2011, a large number of the women within the federal office that was responsible for imposing those regulations on all colleges getting federal $ (which is all but a handful of traditional colleges outside of the for profit sector) went on to take high six figure jobs at universities administering these new guidelines-they used to call it racketeering, I now call it rapeteering.
Point is, the studies in the source you linked to are self serving fabricated bs. Does any of this mean AJ did or did not rape that girl? No. But it does mean that any sort of connotation that he is likely guilty because false allegations are incredibly rare is absolute bovine excrement.