User blog comment:Flamesword300/Overlooked? Ichigos true strength/zanpakuto discussion/@comment-5551986-20130618190015/@comment-10630156-20130619015714

He could be as powerful if not more powerful than old man Yamamoto, which as has already been stated would be scary at the least. If he doesn't have to redo bankai training then we will have to wait a long time before we see this I think because his Shikai would be powerful enough to take out a lieutenant level fighter just like Yamamoto could because of this