Meh, Akainu was fired up like a madman, he was willing and trying to exterminate every pirate (you can see that by both words and facts) yet when Shanks stopped him without he even realizing he was not hitting a little boy anymore but a yonko he imnediately frooze, not even Aokiji managed that, he stood there in his place without moving and without saying nothing: the exact opposite of him a moment before Shanks appeared. All he dared to do was to scream his name yet when Shanks challenged the whole battlefield he was silent again, he was pretty close so he should have heard him, or did he become suddenly deaf?
While this is a BM who chocked Marco and then let it go to not waste power just like Luffy is doing. Sure, she had some sweat when her forst son was attacked yet this is not even remotely comparable to what happened, and the sweat is the least lol, to Akainu after Shanks appeared.