The implication at the end of summary doesn't bode well for Oden's portrayal, if it wasn't for that panel where he appeared as a silhouette alongside other great pirates i would have dropped the idea of Oden defeating any top tier now. That goes to show how Oda completely ruined Oden vs Kaido fight when it reached an ambiguous conclusion. Oden should have faced and lost to an all out Kaido but Oda didn't want Oden to spoil the main antagonist's full strength, so he gave him some flashy feats against full-form/Jobber Kaido.