The question is whether or not this really happened or not. Not whether or not this is "good" for what political party.
No, that's not the question. The incident likely happened, but was perceived differently by Ford and Kavanaugh. Ford may be ginning this up as attempted rape and sexual assault; but I can believe that she remembers the single most salient aspect from her perspective - a hand being placed over her mouth. Kavanaugh likely has no choate memories of the incident at all, since from his perspective nothing memorable happened, just boisterous hi-jinks. As Ford testifies, K and Mark Judge were laughing - hardly the mindsets of predators. Keep in mind that Ford and Kavanaugh never had another encounter after the party. I can understand perfectly why both may be telling the truth from their perspectives.
And that is why the question becomes how Kavanaugh can present the issue of "two truths" in its best possible light. To me, the approach that may save him is tactical contrition - an acknowledgement of the difference in their perspectives, and the possibility that he may have acted, as a 17 year old drinking beer with buddies, in a way that was upsetting to her. With that possibility acknowledged, he can then apologize for his teenage actions and criticize the party culture that was all too prevalent back in those days when the drinking age in many places was only 18.
He needs to turn this into a positive - not by admitting to assault, but by owning up to the bravado and insensitivity of beer-fueled teenage encounters, and pointing to the rest of his life as evidence that he has grown into a responsible adult.
