The thing with votes is that if the user uses bidbots that would make it’s value as an user bigger than what it is.

Perhaps the best way will be to take into account 3 things: number of votes (even if they can be affected by bid bots), average number and length of comments received per post, average visits received per posts).

But finding an specific objective number per user would be impossible. For some people art posts might be of huge value while for others they might be worthless.

You cannot objectively answer your question, specially because the votes will always be subjective, and one way or another votes needs to be taken into account.