I am sorry for being hard on Shanks and got fooled into wanking admirals
WB was hit by cannons, bullets, all shit in MF, weakened and not even able to use haki. Shanks actually blocked healthier WB while Oda used Crocodile and Marco to let us know WB at this point was far from his own self. Shanks blocked Akainu and legitimately scared him...
It would seem my bias for the admirals is just completely unfounded.
Shanks really would be dishonorable enough to attack Akainu from behind though lol. He stands no chance in a fair 1v1 against the guy who low diffed Whitebeard. Shanks would have to attack him from behind to even stand a chance.