@Jack-Waugh We can't know what strategy voters Score voters will use. Meanwhile STAR reduces (but doesn't entirely eliminate) the incentive to be strategic.
I assume you think that a strategic vote under Score will be based on the voter knowing who the front runners are. But unless you know 100% how others are going to vote, that's a bit tricky to know, isn't it? Especially if you are assuming that those other voters are using the same strategy, which means they need to know how you are going to vote. And those are obviously dependent on one another.
So the best you can get is a Nash equilibrium. It's possible that there will be multiple equilibria, which I would expect in the case of a Condorcet cycle.
Which basically means your question is unanswerable. Because Score (as you seem to acknowledge) demands strategy, it is intrinsically unpredictable. You don't just need to know what voters' preferences are, you need to know what their strategy is, and how much they know about others' preferences... and then add a bit of "hall of mirrors" style infinite recursion into the mix for good measure. (you can see my simulator of this recursive equilibrium seeking behavior at https://pianop.ly/voteSim/voteSim.html or a video -- of an earlier version that didn't yet have Score voting -- at https://www.youtube.com/watch?v=NiS2A0QLeJU )
Many of us think that you should be able to vote without concern for who the front runners are. We don't want to worry that inaccurate polling could easily throw the election. We don't want a tight three way race to turn into a game of chicken. We don't want voting methods to work significantly differently in elections for which there is (or isn't) a lot of media attention.
You say in another thread that anything that deviates from "one person one vote" is anti-democratic, and I would argue that you are violating that principle if you are giving extra voting power to those who are better able to guess how others will vote.
In any case, I'll just say this. If you are trying to sell Score to the public, while acknowledging that voters are expected to vote dishonestly (or insincerely, or strategically, or whatever you want to call it).... good luck. I can pretty much guarantee you that a system that allows such fine-grained expressiveness, but then strongly incentivizes voters to use that expressiveness to say something that misrepresents how they really feel, is not going to fly. There are a lot of people (including myself) for whom that just feels dirty.