That's because the helmet they were using had a big tail imo. I would be interested to see the aerohead in position 2 vs their helmet in position 3.

That's what she said.

Head position is important but I call BS on the numbers in that test. Shoulder position is more important than head position, and position 3 has him shrugging his shoulders, which is surely a big source of the gains. Also his head/helmet position isn't great in any of the three positions, though 3 does look the best. I guess it's good publicity for Specialized though, which is all they care about clearly.