Well, what was actually said was that Aizen would need 10 of the rank 3 menos to destroy soul society. But I think the 20 in the throne room were both rank 2's and 3s. Much like Yami is one of those rank 2's and Urlq(I can't spell his name, I'll just call him U*)is a rank 3.Originally Posted by Yukimura
Of course, they also confirmed that U*, as a rank 3 menos, is stronger than a captain BEFORE he became an Arrancar. Which means he's a massive badass now.
Other than that, the episode was mostly just funny. I especially though Ichigo's family evesdropping in the hall was hystertical.