Needs more VIS. Bort/Catch have stated that in order to best sim real life, players have to pass a very high VIS roll to properly spot and time an attempt to block a kick, then the other attributes kick in to see if he can.
I think jumping is the only attribute that plays into the roll.. (swat ball or another SA might). Its been a while since i've seen a bort quote on it but i'm nearly certain that vision does not play a part of the roll.