Case in point... Bob Cannon did this wonderful piece of character animation for the ending of Chuck's MY FAVORITE DUCK (1942). It's clear that early on Chuck didn't want the darnfool duck triumph unconditionally. "I showers him with lefts, and rights!" I'll post more of Cannon's work later on.
Now take a look at this ending animated by the great Ken Harris for RABBIT PUNCH (1948). Notice any similarities? It seems like Chuck only let his characters get off easy (or easy enough where cutting the film is a way out of a tight spot) when they were on higher moral ground, which Bugs usually was. Harris will get a spotlight in the near future!