Well, it's not actually bad, but I'm not entirely sold on it. It's definitely in the
Ultimate Spider-Man universe (unofficially called
Earth-TRN123, apparently) -- the same voice cast for the shared characters, the same look, even a J. Jonah Jameson cameo -- but is taking a relatively more serious tone, and is heavily, heavily derivative of the movie, right down to copying the film's Stark Tower design so exactly that I think they just took the same computer model and applied a more cartoony texture to its rendering. And yet it also features the same Avengers Mansion seen in
Earth's Mightiest Heroes, or something very close to it in design.
It feels like it's trying to set itself up in a way that it could pass to the casual viewer as a sequel to either EMH or the movie. The Avengers existed before but have broken up, and now Stark brings together the same team from the movie. But it becomes clear that the team spent more time together here than they did in the film, plus Hulk is a lot more talkative. And it doesn't fit the EMH continuity either, because the Falcon is a very different character, and because Iron Man has no history of leading the team in this version. I think I'd prefer it if it were more forthright about defining its own distinct reality, rather than trying to be this generic.
And there's a big logic hole in the central premise. Okay, so Iron Man takes on the leadership role he's ill-suited for once Cap apparently dies, and struggles to become worthy of that role. But they get Cap back before the first episode is over! Why not just pass leadership back to him? This is never addressed or justified. It just feels like Iron Man had to be in charge because he's the top dog in the Cinematic Universe, regardless of whether it made any in-story sense.
I'm not sure how I feel about the "let's all be roomies" premise. That has the potential to degenerate into reality-show-like hijinks, and isn't that what they're also planning to do with
Hulk: Agents of SMASH, only even more blatantly?