Totally agree with this post. Sage mode has tanked huge spikes and all sorts of damage. For a single sword to pierce him is pretty unrealisticYou talked about the bijuu cloak but you didn't mention anything about sage mode.
People seem to forget naruto had both of his best defenses up (bijuu cloak and Sage mode) yet a un-enhanced sword negg both at the same time.
Doesn't make sense to me when we've seen what both the bijuu cloak and sage mode has tanked in the past.