The problem of boardgame evaluation is that what we have multiple populations that have very different ideas of how good a game is, and are so aware of their preferences that they will not rate all that many games outside of their favored niches. Therefore, making head to head comparisons is not really about rating games, but the number of people in each group that decide to even rate the game. Any analysis that does…
Flawed: you may not like this, even if you usually like things like this
Good: perfectly serviceable example of this type of thing, if you are interested you will probably like it
Exemplary: people who like this kind of thing tend to agree this is one of the best
Outstanding: you may even like this thing even if you haven’t liked things like this in the past, and if this is your thing then don’t miss it
I find that it’s fairly easy to sort things into the first three buckets by scanning through reviews and comments, but the fourth one is hard because by definition you need atypical reviews. Would be interesting to see an analysis that more or less predicted what reviewers would like and then plucked out positive outliers.