Manon I wish what you are saying is true but with a well constructed team (I.E one that can play LI) I don't think this game incentivizes nearly as much tactical variation as you are implying. Sure there is the odd team with bad OD and good ID in d4 but they are the exception not the rule. .
His opponent had 4.5 OD and 5.5 ID. Also this game has already passed so I assumed he was trying to make a more general point.