Uta is canon, but the movie isn't.
We've been told by WG that Shanks was winless against Mihawk perhaps which allowed Mihawk to have the WSS.
We've seen Mihawk is a kind soul and Shanks tried to exploit that by adopting Uta and making request to Mihawk like ny daughter is watching our legendary duel, please let me win for once and later on when he failed to have the title, he sacrificed his arm as a reminder that he wasn't no 1
We've been told by WG that Shanks was winless against Mihawk perhaps which allowed Mihawk to have the WSS.
We've seen Mihawk is a kind soul and Shanks tried to exploit that by adopting Uta and making request to Mihawk like ny daughter is watching our legendary duel, please let me win for once and later on when he failed to have the title, he sacrificed his arm as a reminder that he wasn't no 1