You see? This is one of the things I really disliked about friends, the inconsistency.. in earlier seasons Chandler was super into sports, and In season 3 Chandler was watching football enthusiastically during thanksgiving, but all of the sudden he became dumb for no reason at all !
The netflix version of friends has so many scenes deleted from this episode (including the last one in this video) that is why I dont watch friends on netflix anymore. For instance another scene from this episode which is deleted is when Phoebe asks Joey to bring wine and glasses and he at first brings her something else)