The way devil fruits were potrayed back then it wasn't too big of a problem for Shanks to fuck up like that. Now that Oda has made the gomu gomu so special it needs WG transportation it makes Shanks look mentally challenged to be carefree with it
Before I didn't have a problem with Shanks being so carefree with the gomu gomu....but then it comes out that he stole it from the WG and it is some special fruit that needed a Rob Lucci rival to guard it. It makes Shanks look stupid.
Can you not read my friend. The vivre card said equal or superior. Nothing about mihawk holding back
Imagine Roger asking Vista to postpone a fight. But then again we already know what Roger does to top tier swordsman.
:finally:No postponing needed