It's less I don't think the epsiode itself is a "Mario epsiode," and more just have gripes with a few parts of it, the Shake King feat is apparently super inflated/inaccurate, and I personally thought it was kind of strange that they bring up the Black Jewel's universe creation/nuking, one of the most explicit Uni feats in the series and one performed by Wario himself, paint it as very impressive (Talk about how the Black Jewel's death destroyed a dimension while showing Wario tanking said dimension nuke), then turn around and say that wario's only possible way to be Uni is scaling to Rosalina. I think the episode is good, I just don't think it's a 10/10 (I'd personally say either it or MvS 2011 is the best Mario DB at the moment
Also both Bowser vs Ganon and Luigi vs Tails were very disrespectful towards the Mario character involved, the former treated Bowser like a complete idiot ignoring all his actually impressive feats of intelligence and using a single Nintendo Power scan claiming he's illiterate while the animation is just him sitting around, occasionally trying something that doesn't work, and otherwise hard jobbing. While the latter's fight is very similar in that Luigi takes forever to do anything, that thing doesn't or barely works, and anything Tails does smacks him around and leaves him reeling Also they had him lose because of a ******* dream radish They used Archie Tails and the best they could do was "dream radish, GG?"