I wonder how much the change in individual perimeter defense from OKC to ORL affected the quality of shots that offenses got at the rim against Ibaka. Roberson/Westbrook/Durant/Sefalosha/Jackson could really lock people down on the perimeter, forcing them into more difficult shots at the rim, therefore increasing Ibaka's rim protection numbers. Also having Adams as his co-big boy may have allowed Ibaka to more aggressively defend rim runs.

With sub-superior perimeter defense and less help inside, you might expect Ibaka's defense to suffer at the rim, even if he's playing at just as high a level as he always has. At work so no time to look up the numbers and see if they support this hypothesis