A lot of people read disregard the fact we were straight up told enma is how oden scarred kaido. Mainly being because the scar has to intersecting slashes for each blade
And yes while oden very obviously used both of his swords while cutting kaido he wouldn’t have been able to do as much as he did without enma
That doesn’t change the fact oden was extremely powerful and had to be to use enma to its fullest but again without it he’s not doing as much. Swap out enma for wado and man is definitely doing less. Give him nidai and enma tho and his output would probably be insane
Probably at best doing as much as his retainers version of his attack without it
So basically
- Kaido is just that tough
- Enma is 2 for 2 when it comes to swords that scarred kaido
- Yes oden is obviously strong and him needing enma doesn’t diminish his strength. Him mastering it is a reflection of how strong he really is. By default same applies to zoro