My 2 cents on the saitama and goku fight.
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Personally I don't care for either fandom that hypes up the characters, but I can see why saitama wins.
Everyone wants to talk about how powerful goku is with his different forms (SS Blue KK, Ultra Instinct) but nobody wants to point how stupid that is in comparison OPM. Goku and similar characters of the series, are always gonna get stronger as the story goes on (but more likely Goku).
OPM is never about the outcome but the battle that leads to it. I think if anything the animation showed an understanding of both series characters with the simple fact regardless of feats, Saitama has never been hurt or shown to be in serious pain from anyone unless its a gag. Goku was shown to be the better fighter especially in Ultra Instinct. But it doesnt last forever and no matter how strong Goku gets, he has a limit to how far he can push himself.
Saitama hasn't shown us a limit, no matter the gap in strength of his opponents, he is always stronger.
Next Battle
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I don't really watch MLP but I've seen some interesting stuff come out of it. I think the battle is gonna depend on what they have access to.