Who is the best defender, AD, Jrue, or Asik?

So, here's a hypothetical question. If the game had no offensive component...... Let's say we play NBA teams with the only goal being to minimize their scoring over 100 possessions. Who do you take? Additionally, where do you rank each player in their respective position?

Right now, I'm going Asik, AD, and then Jrue.

Asik- 5th best center behind Hibbert, Howard, Marc, and Noah
Davis- 1st power forward(unless Duncan counts) Millsaps, Ibaka, and Gibson close
Jrue- probably about 8th. Hard to rank. He's not as quick as the elite guys but he's got great size. Much like his offense, he's just very solid, smooth and seems like he has no weaknesses. But a bit of fool's gold in that he is just not a playmaker.

What do y'all think? Surely I am ranking one of these too high. I don't want to appease Boom(he's often a total clown), but why is our defense not better if these guys are as good as I think?

But on the other hand, everybody(including Vegas), expected us to not improve tremendously despite adding Asik(an unquestionably elite defender) and the obvious improvement of AD. Does that point to it being Monty never being able to coach an elite D regardless of personel? Was Aminu that important?

With even a scrub like Aminu on the team, the sum of the parts should be a top 5 D with Indiana, Chicago and Memphis.