Even sans crits, Epic Green Goblin tanks quickly to any all-bruiser team, especially if you pair them with an extra buff like Strengthened or Gamma Radiation. I'm determined to get him in one round somehow. I did it in two with Hulk and She-Hulk. Maybe Torch and Thor, if I luck out and my agent can burn him first.
I feel like the game is having a hard time creating balanced enemies that casual players can defeat who can also offer a challenge to more competitive PVP players. Honestly, I still feel that Epic Magneto is the gold standard boss fight - puzzling, hard, and fun.
I think with Red Skull intersecting with X-Men for the first time in Uncanny Avengers Marvel has had to rethink how they position his legacy as a Nazi a little bit, and that's showing through in the game. Both he and Magneto have a very specific WWII past that other characters like Doom can be aged away from.