You keep comparing Duke's top interior player to other teams' top interior player and seem to think you're demonstrating something of importance. Kansas didn't have a massive post presence in 2008? Well, KU didn't have a Luke Harangody who took all the shots in the post. They didn't have a Kevin Love to look to or push the ball into on every possession. But they did have Arthur (6'9" and unbelievably athletic and very skilled), Darnell Jackson (6'8" athletic, fairly skilled, and beefy), and Sasha Kaun (6'10" and your typical back-to-basket post). We used all of them and had Cole Aldrich (6'11" and raw as a freshman, but with a fairly classic back-to-basket approach) in reserve to use for support when fouls or injury hit during the year. We also had 6'7" Brandon Rush who was a strong rebounder from the small forward position.
And you mention Noah only scoring 12 a game. Do you understand how balanced the Kansas and Florida teams were? Florida had Noah and Horford down low. They had Brewer too. 12 (in Noah's case) and 13 (in Arthur's) is a ton of points to put up on teams like those. And Florida and Kansas put an emphasis on getting the ball inside, either pitching it in low, lobbing it in for dunks or off of penetration by guards. To try and compare Duke's one top interior player to the bigs of these national title teams is missing the point. Duke's got great players, but until this infusion of bigs, you haven't had enough of them. And it still remains to be seen what you'll actually do with them.
You can win, hell, you can win it all, without the commitment to the interior shown by recent tourney winners, but it will be hard. You take a look at the
shot chart for the Kansas-Memphis game in 2008. Kansas had 6 dunks and 13 layups. Arthur posted continually and hit turnarounds and hooks and stepped out. He had 20 and 10 on the night. Kansas also had three guys off that team start the following year for their NBA teams, including Arthur. And Kaun (Russia) and Jackson (Cavs) are both playing for serious dough (Kaun moreso, but Jackson at least in the NBA).
To compare that or Florida with Horford, Noah and Brewer to Duke's interior since Shelden Williams is a pretty massive reach. Not because Duke hasn't had a singular player who could compare, but because it's largely been one guy and the commitment to the interior hasn't been there.