The test didn't give the whole picture, which is likely by design.
The didn't address sport handling, which is a function of the rubber compounds and the tire carcass design/fabrication e.g., belts, sidewall construction, bead, etc. The other thing they didn't really talk about is fuel mileage.
They need to generate some real test data similar to Consumer reports using a dyno for rolling resistance, and have some experts drive them on a closed course for sport driving comparison. Forget this "seat of the pants" testing.