Epic to me can only be achieved when we know the fighters and understand them and their motives. We need to know that something is at stake personally.
KingofPirates and of course Morton are almost always feel epic to me.
My favorite story ever: „Canami Island“ had 2 parallel storylines. One followed 2girls and their rivalery with another couple, both girls had backhround and character - it was epic.
The other line followed 2 more generic girls to a sexclub where they watched other girls fight - it was boring
The fights were well written in both storylines but the first clicked with me, the second not at all