Just watched it.
The actual fight was lit af and REALLY good, imo the best Death Battle animation ever and probably the best Goku Vs. Superman fan animation I've seen, with only a few contenders. That alone genuinely makes me happy with this Death Battle it was SICK, and I LOVED the dialogue and interactions, especially how it ended. I think it's very narratively fitting, and the way they explained who the characters are and what they're written for was a nice touch. I agree that, from a NARRATIVE PERSPECTIVE, Goku will never beat Superman. Goku's whole shtick is that he's a guy who challenges himself and breaks his limits to strive higher levels. Superman is literally a Gary Stue comfort character that can just do whatever he wants. Honestly, Superman is pretty much a gag character who just has a lot of serious comics. Not saying that means he wins in an actual debate obviously, but from a writing/narrative standpoint I agree with Death Battle on that end.
In terms of the research/stat sections, most of it wasn't too bad though questionable spots here and there especially for Goku, and they mentioned literally 0 of Goku's abilities from Heroes despite Instant Transmission being more OP, but the power section is extremely disappointing. ONCE AGAIN, as I literally called earlier, Death Battle refuses to use any terms outside of what casual audiences could easily understand. They will never use terms like "multiversal" (at least not properly anyways), let alone "low complex multiversal" and so on. They'll mention dimensional tiering on very, very rare occasions, but only when it is something explicitly stated and shown or if it's something they think is fitting for the character they're talking about. For example, no one, even casual audiences, will have trouble understanding the Marvel abstracts like Eternity and such as higher-dimensional beings, but when you argue about Goku having 4D, 5D etc. power levels, that's when it becomes, at least in Death Battle's eyes, harder for casual viewers to understand or agree with, and Death Battle is afraid of that, so they just dumb it down to "This guy can destroy this many universes, but this guy can destroy way more!". Therefor taking away accuracy and detail just to appeal to a broader audience.
And the fact that they said they'd use Heroes and then literally ignored Heroes for like 95% of the scaling is almost offensively disappointing...like wtf. It's funny cause they talked about how Superman killed a multiversal being and destroyed said multiverse with one punch, but didn't even MENTION the MULTITUDES of multiversal threats Goku has faced in Dragon Ball Heroes and Xenoverse. Like what the actual f*ck DB???
Anyways, besides some scaling grievances I think they covered a lot of stuff pretty well (if they left out Heroes and sticked to canon it would've summed up most of Goku's combat capabilities, but power would still be a bit lacking), and the actual fight was legendary and deserves praise.