I feel, in reality, you could not do a scietifically proven head to head comparison of any of the three designs.
Impossible really. Think about it. You would have to use the same rider, riding over the exact same course, using the same line each time, producing the exact same amount of power each time. Notwithstanding fatigue, rider feeling, weather, temperature, wind direction, strength.
You just have to sample all of them if you're curious, and see how they feel FOR YOU, INDIVIDUALLY to ride.
Mike