Yamato and Mushashi were the subject of the most extreme overkill a BB has ever had to suffer. Way more than Bismarck (and Bismarck was a clear instance of a massive overkill)
that Mushashi took 17 torpedoes before sinking, or that Yamato did eat 10 before going down doesn't mean they **needed** all those hits to go down.
It's as in SH3 you get a Type XXI out and shoot a Black Swan with all 6 torps in a full torp spread. It will go down. Does that mean a Black Swann needs 6 torps to sink?.
....no. Well, same goes for Mushashi and Yamato
