You always mention this GB moment, but never that he said he would fight Shanks and crew.
Are you biased or are you not? Lol.
In case you don't know me ask some admiral fans here, no one defensed Admirals more than me over the years, I have for the longest maintained Akainu > Any Yonkou besides Primebeard but Admirals showings have been pisss poor since Wano ended to say the least.
You can look at verbage all you want, but Oda doesn't even have enough respect for Green Bull to give him proper hype, instead he used him as a film red promotional material where Shanks from a whole continent away takes out his blade half way and basic energy emenating out of it has Green Bull shook to his core and return to base form and raise his hands up after screaming.
One doesn't have to be a casual reader, even at deep analysis Oda made Shanks look vastly superior to Green Bull. Then he had Kizaru be knocked out for like 10 minutes from White Star Gun and threw aside like a Pizza in 1v2 and he was the one caughing blood while Saturn came right back like a torpedo only to make Luffy retreat.
Its one thing to defend admirals and another to be blind.