Curious that "The taste test is part of the UC Agriculture and Natural Resources Malt Project evaluating malting barley's potential as new crop in California", since California already grows barley for malting, and has a few of its own maltsters.
A related experiment compared premium, floor-malted Maris Otter with domestic two row barley malts. Basic conclusion was that some could taste a subtle difference, but preference for one over the other was mixed.
Obviously, in beers, hops and yeasts lead to far more variety in beer flavors than different malts do.
Still, when I'm brewing an everyday beer, or one that's destined for other strong flavors, I'll reach for the basic two-row. If I'm making a more subtle beer, I'll reach for the Maris Otter.