Joe, I'm guessing you're thinking more broadly than this forum (e.g., is there a way to generally help people focus on a subset of responses that are likely to be the "best")... I'm sure through some combination of NLP, clustering of similar responses, upvotes, downvotes, reputational measures, etc., you can at least find the common sentiments.
But good luck on determining whether they're the "best" or not. There are a ton of problems: questions rarely have enough context for you to evaluate whether an answer is best or not. "Best" or even "directionally correct" are highly subjective and I can find myself on either side of an argument just depending how much caffeine I've had.
Neil's comment is right on. If you disagree with a response then the single most valuable thing you can do for yourself and the community is to present a counter-argument. That's the only way people learn.