I think the point in the interpretation is Abraham
bargained; he
did something. Noah was simply like, “You’re going to destroy the earth? 'Kay, fine, let’s build this boat you’re asking.” When God revealed He’s going to destroy the two cities, Abraham reacted
actively (“Will you indeed sweep away the righteous with the wicked?”) When God revealed He’s going to send a flood, Noah was
ambivalent - he simply did
only what he was told (“Build this ark”). He never even bothered to say anything to God: “Noah did so; just as God commanded him, so he did.”
If we’re going to extend the Hasidic analogy, God may have told Noah to put on the coat, but he stopped then and there: he just followed the instructions to the letter. If this was Abraham, he would have gone beyond what he was told and built a fire or sew more coats.
You might say that this is a sort of tendency in Jewish thinking: it doesn’t look favorably upon passive quietism, which Noah exemplifies. It instead prefers the activism of Abraham; you cannot just be passive, even if it’s God talking with you. There are of course times when you do what God commands with no question (for example, Abraham’s near-sacrifice of Isaac), but at the same time God prefers that you be mature, to stand on your own feet to the point of being able to talk with Him, to question Him, to struggle with Him. You can’t always be a child forever - there’s a time for everything. That’s why this Jewish interpretation thinks that Abraham who walked “before” God is greater than Noah, who walked “with” Him: Abraham was the more mature person. He stood on his own feet.
Funny thing is: Abraham struggled with God, and Jacob also wrestled with God (literally). I mean, what does the term ‘Israel’ mean? “He who
struggles with God.” You might say it’s in the blood.