That was just to show they are not the same. I would expect that front had rotated several times. But even if it was a quarter turn 300.5:300 anything measurable is significant number if doing a TT where winning times can decided by fractions of a second. This year my son managed to beat his opponent by .033% of the total time.

But the side to side motion - the turning of the wheel to correct for the natural jarring that occurs when cycling is the primary reason it matters.