The jurors probably will. If she had sex with some one prior or after sex with Kobe, it causes doubt over whether Kobe caused her gyno-injuries. Without the physical evidence directly tied to him it becomes a promiscios womans word against his. BTW I don't have any idea if he is guilty or not.
If her bleeding was caused by sex with other men, before and after Kobe, then the blood specks on Kobe's shirt are not necessarily evidence of a rape.
Only God, Kobe, and Katelyn knows what happened inside that room. The rest of us have to examine the circumnstantial evidence to try to find out the truth.
If Katelyn serviced several men a few days or hours before having sex with Kobe, then she will have an uphill battle trying to convince a jury that those tiny lacerations in her fourchette came from sex with Kobe.
How many men had access to her vulva and her vagina before Kobe, in the time period where injuries where still fresh on June 30, 2003?