Yes, this fact that "there is no DNA match to TSJ" is inconclusive, since it was around 17 hours from the time of the incident that samples from the alleged victim were taken at Lawrence Memorial Hospital. By that time, it is likely the alleged victim showered and possibly douched. Either one would make it very unlikely to find any other person's DNA with a vaginal swab taken by a SANE.
It looks like the key witnesses and evidence in this case (in no particular order) are likely: 1) the allege victim and her statements to police and testimony, if it goes to trial, 2) the alleged victim's phone records (to corroborate her allegations), 3) the surveillance video that showed she and TSJ were both in same part of the Martini Room in Jayhawk Cafe around the same time ("for a little over 2 minutes" according to the affidavit, so that is also corroborating evidence), 4) the friend of the alleged victim (the same one who appeared to be consoling her a short time after the incident) and any statement she made to police or testimony she gives at trial, and 5) possibly a bunch of other witnesses from the Martini Room crowd and their phone data including TSJ, those that traveled and attended the game with him (Justin Harmon and DeShawn Hobson), the KU basketball player next to TSJ who the alleged victim later recognized, the female who allegedly was in TSJ's other arm at the time of the incident, and so on.