a better design would have been three treatments, one with extreme oxidation control (aka LODO), one with regular homebrewing practices, and one with the extreme whipping. Also, to minimize confounding factors, I would have avoided caramel malts, an estery yeast (WLP002) and a significant load of aroma hops. If I were to choose, a Helles with very low to no hop flavor or aroma will provide the researchers the best way to pick up a significant difference should there be one. And of course, do the testing with fresh and with aged beer.
This^ I agree that a redo of the experiment would be helpful and that these would be the best criteria IMO.