This question of mine:
Help, the "onus" is on me! What do you call whatever it is I'm supposed to do with it?
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"?