From the article you discussed on wiki (Burlington 2009 mayoral race)
> In IRV, there is no tactical incentive for a voter withhold or falsify their second choice.
We can get into the weeds about mathematical details like Monotonicity and Condorcet, but the truth of the matter is that nearly all the time (much more often than First-past-the-post) these measures end up being identical anyway.
I don't think anyone would argue that first-past-the-post would have produced a better candidate in this election than RCV did.