Question: is kenpachi stronger than byakuya?
Answer: Because Kenpachi is a Captain of Squad 11 and Byakuya is a Captain of Squad 6. So both of their Reiatsu or Spritual Press. is strong and of equal level i.e of Captain Level. Kenpachi Zaraki just looks super strong and Muscular than Byakuya Kuchiki. Both of them have weak points which can be exploited by both of them.