FCP works against some kind of player, and less against some kind of tactics. A good example is this one ->
(3165543)(look at season 7 and say if you could spot the fcp games) And player like this ain't shown in the offensiv flow, which could be affected by an medium point guard who normally don't struggle much against a fcp.
If you try to disturb his game opponing a 3-2 would be more effective - even when i am not a big fan of this theory. A good alternative to 2-3 is always the man to man defence.