What happens if there's an answer with a lot of votes, and even marked as accepted, but a user find a better solution? maybe nobody get it. I think that top users replies should be highlighted in some way, because we know that replies from advanced developers always are good.
It is a slippery slope.
To quote Orwell:
At Stack Overflow, we believe that information is king, great information may come from 1 rep users or 10k users.
An argumentum ad hominem fallacy right there.
The fact that an answer comes from a highly ranked user does not mean is the best answer. The community will rank the answers based on the quality, so if an answer gets a lot of votes it's probably because it's a good answer, regardless of the rep of the person that answered. If you believe that another answer is better, then upvote it, and even leave a comment in the highest voted one stating why you think it's not the best.