kanter wont even be allowed on the court in the playoffs, he's too big of a defensive deficiency.
so if you look at that series vs the spurs they lost the first two without ibaka, then won two, then lost two, the final one in OT. if they had ibaka all series you cant really say what wouldve happened, but even more, that spurs team pasted the heat and was awesome in general. the thunder didnt lose because of a specific weakness and certainly not one that enes kanter is going to fill.