"Measure Of A Man" is the only really great season two episode.
"Q Who" is half an episode. Hurley has an idea and a premise there which turns out to be brilliant for TNG - when a better writer, Michael Piller, is eventually able to make use of it a year later. Hurley's episode doesn't really have a third act. The characters meander through a series of unfocused scenes aboard the Enterprise that rely (as usual) upon the talents of Goldberg and Stewart and de Lancie to salvage mediocre writing, then we go sight-seeing to Meet The Borg. Then the episode stops.
Meh. If that's good enough for you, fine, but it's not "great" much less "the greatest" anything.