My concern is that he was convicted of raping two women, the younger of which didn't come forward for 3 years - at that point, what physical evidence remains? The older is enough to establish that he's got a target range(pedophile), but she didn't come forward for over 20 years. That's even worse, isn't it?
That said, they felt they had enough, and were able to achieve a guilty verdict. All I hope is that the guy's actually guilty. That they were able to collaborate the women's testimony with other indicators that are often overlooked at the time.