Hi Gene,
Wide margin?
It seems that in the incredibly small sample size...3(!!) people, 2 preferred the Salks, 1 preferred the Infinity. I would hardly consider that a wide margin, in a 3 person sample size

.
Then there is this
It should have been obvious from the setup that it would be fraught with problems, this being a very good indication of why. Bravo for Tom's sincere effort, but the results may have been vastly different had the setup simply been 2 pairs, each side on a turntable, one at a time rotated into the optimum position...and listened to from a central, single location, either one listener at a time, or all three single file but slightly vertically staggered (like stadium seating).
The Salk may have still enjoyed the 2/3 preference. Or maybe not. Hard to say, based on the article data.
cheers,
AJ