Question: is aizen stronger than yamamoto?
Answer: Ichigo, Aizen, Zaraki and Yhwach are far more powerful than Yamamoto, same thing for Ichibe who is also superior to Yamamoto, which makes Yamamoto dangerous is his flames, but statistically, in terms of Reiatsu, he is widely, far less powerful than Ichigo. ... Ichigo constantly gives off Reiatsu at the level of a captain.