He loses regardless. Yamamoto's only advantage is that his flames are stronger, which ordinarily would seem like the deciding factor given they are both flame sword wielding characters, but Conduct of the King + Starjun's superior stats despite Yamamoto's impressive ones give Starjun the win.
The strongest character from Jojo's Bizarre Adventure. A classic Jump Shounen turned Seinen. It's a really long but highly enjoyable series. Giorno has the ability to revert anything back to 0 including offense. It's like an automatic defense/offense mechanism that bypasses all offense and defense on a universal scale. Even time/space manipulation didn't do a thing to him due to his ability Golden Requiem. You basically have to be a multiversal reality warper/creater/destroyer to beat him.
Ichiryuu wins. Skrull is technically only class 90 with low end hypersonic speed. While he has more to him than that, it doesn't make much difference. Ichiryuu beats him with either Minority World or the Chopsticks.