There is a reason why Oden's techniques are very similar to the Zoro's ones.
There is a reason why both Zoro and Oden's techniques are named after food puns.
There is a reason why:
-Zoro meets Hiyori when she's 26
-Oden meets Toki whe she's 26
There is a reason why:
-Zoro saves Hiyori from who is going to be an ally afterwards
-Oden saves Toki from who is going to be Han ally afterwards
There is a reason why:
-Hiyori gives medical treatments to Zoro after the latter fainted after saving her
-Toki gives Oden medical treatments after the latter fainted after saving her
There is a reason why Oden and Zoro are the only two swordsmen to have ever tamed Enma.
There is a reason why Oden and Zoro are the only two to have ever
There is a reason why when someone picks up the sword of its deceased previous user he inherits his will.
And this is a manga that heavily relies on the inherited will trope.
I'm being generous and therefore I stop here, but there are a lot of other parallels actually.
So, to sum up: if you weren't able to realize all these parallels it's your fault, because anime is not making up anything.
Not that I like Zoro being paralleled to Oden, but what's implied in the manga can't be denied
There is a reason why both Zoro and Oden's techniques are named after food puns.
There is a reason why:
-Zoro meets Hiyori when she's 26
-Oden meets Toki whe she's 26
There is a reason why:
-Zoro saves Hiyori from who is going to be an ally afterwards
-Oden saves Toki from who is going to be Han ally afterwards
There is a reason why:
-Hiyori gives medical treatments to Zoro after the latter fainted after saving her
-Toki gives Oden medical treatments after the latter fainted after saving her
There is a reason why Oden and Zoro are the only two swordsmen to have ever tamed Enma.
There is a reason why Oden and Zoro are the only two to have ever
scarred Kaido
There is a reason why when someone picks up the sword of its deceased previous user he inherits his will.
And this is a manga that heavily relies on the inherited will trope.
I'm being generous and therefore I stop here, but there are a lot of other parallels actually.
So, to sum up: if you weren't able to realize all these parallels it's your fault, because anime is not making up anything.
Not that I like Zoro being paralleled to Oden, but what's implied in the manga can't be denied