Did Kavanaugh ever say the latter? In fact this line of criticism seems to work in his favor: the label "drunken loser" was applied to Kavanaugh much more frequently than it was applied to Ford, at least from the coverage I saw (admittedly, mostly from left leaning outlets so that may be a factor).

I'm not sure why you brought up #2 given that you later state that you don't know of any instances in which Kavanaugh lied. Yes, if Kavanaugh lied that would be significant. But as you stated in your own comment, you do not know of any such instances. I am not aware of any statement that was proven to be false either, at least outside of tangents that stretch my idea of relevance to the accusations (e.g. contents in his yearbook). So, yes if Kavanaugh lied that would be valid criticism - but we both agree that this was never demonstrated, so this point is moot.