As I've already said in an other post, I think combat animations in this arc are very poor, especially captain vs captain. This episode reflects exactly my opinion : look at the Byakuya vs Byakuya fight, we only see them hitting each other's sword once or twice and it is a very.... well not impressive fight.
Same for Kenpachi vs Kenpachi, we could be seeing a very epic fight between those two incredibly strong fighters but we only see a few sword swings.
It's hard for me to explain my thoughts since I'm not an english native speaker, but watch closely at the fighting captains scene : you will se how much the animation team put the least effort in this battle.
@Pilgore : you can watch episodes from here : http://www.animecrazy.net/bleach-anime/
Very fast subbing et OK quality.