One word: recursion. Recursion amps up the learning curve for most folks, particularly the math-challenged.
Both my short-cut and the way FairVote is melding IRV with Top Two primary so there's only 4 candidates in the last round solve this problem by ending the use of recursion. It shd therefore be comparable and, just because folks think they understand approval/score-voting, doesn't mean they really understand it and the nuances of possible strategies with both rules. Plus, see my reference about the politics of electoral reform and the need for elite-mass interactions. The bottom line is that electoral analytics is the hand-maiden of electoral reform, not its queen. dlw
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