Ah I didn't see the more recent strand of the argument there.
Well in light of the new direction this bizarre argument has taken I've had a better look at the figures in the study from before;
Left footed kicker is read by the goalkeeper 45.8%
Right footed kicker.........
wait for it..........
48.4% of the time.
Interestingly enough within those figures goalkeepers choices reflected what 'footed' the kicker was, choosing to dive left for a 'leftie' 29.3% of the time and 32.1% of the time on the right for a 'rightie'.
Left footed players score more the righties when shooting to their weak side.
Total % for lefties from 406 pens = 81.0%
Total % for righties from 1011 pens = 79.8%
I'm no expert on stats but i think we can conclude from this that we are, as usual, arguing about nothing.