They are not reporting it is a 90% match. They are reporting that she IDed him 90% certain and would be 100% certain if he only had his mustache. They are not saying the DNA matches 90%. The DNA has some characteristics of the defendent but is vague and mixed with at least 8 other people's DNA. It is of no value to either side.
Except maybe to the defendant whose DNA was found under her fingernail.
Thank you! Correct on the 90% explanation. Also, oral rape is still penetration unless he/they slapped her around the face with "it" instead of penetrating her mouth.