It's actually plausible that Shanks is just as effective with his one arm. A sabre is a one-handed sword, so he'd only be used one arm for it anyways. With practice, he can just be just as good as his dominant hand with his other hand.while i agree with you that mihawk would most likely win this fight high diff seeing as he's on par with 2 handed shanks (and i don't care what ppl say about him still being just as strong, that simply doesn't make any logical sense. he lost a limb therefore he lost some maneuverability with his swords its just common sense. were we to lose an arm we wouldn't be useless but admittedly slightly weaker/less useful)
i would like to see a scan of big mom admitting that just for my own peace of mind