User blog comment:B214/Question and Answers 6/@comment-26345952-20160924153546/@comment-90.209.241.14-20160924184543

Yeah I just checked but I think Because the BxB had half of Yamata no Orochi soul it was more vulnerable to curses so if the BxB didn't have the soul it would have be better suited to take on Saji's BxB.