Okay, so going through each one.
Ford's is ridiculous because:
1. It's from 36 years ago, long past any possibility of finding physical evidence or reliable memory.
2. Entirely lacking in corroborating witnesses.
Of the few witnesses available, they have said under penalty that they have no memory of such an incident.
3. Her testimony about who attended has been inconsistent. Her memory in general about the incident has large holes on key facts.
Deborah Ramirez:
1. Also from 36-ish years ago.
2. She was drunk by her own admission, and admitted she couldn't be sure it was even Kavanaugh.
3. Neither the New Yorker nor the NYT could find a single corroborating witness, nor could they find anyone who could place Kavanaugh at such a party.
Avenatti (It's sad that I even have to do this):
1. Outrageous on its face: that Kavanaugh was, at age 15, leading a gang-rape ring that spanned 10 parties without a single witness or even a victim named.