This question of mine:
has several answers. The two most upvoted ones are actually the same answer, presented differently. Regardless of whether I accept one of them (I might not, there's an interesting discussion in the comments): The less-upvoted one is more detailed and well-researched, but the other one got got an initial upvote lead of just 1, and gradually that increased. I tend to believe it is merely by being the first to appear on the page - and people are naturally biased against voting for the second appearance of the same answer.
This is actually a more general issue, I suppose (meta.SE.com?), but at least in this context - can I do something about it? That is, how can I promote the "better duplicate" answer over the "worse duplicate"?