Err, let’s not go with the ‘female characters are quite good’ deal either. The only character who is somewhat playable is She-Hulk and that’s because Settlement is setup to counter a very large number of special moves on purpose (Judgment for one, but anything that generates less than 3 special tiles can be easily countered), and even then because of the overwhelmingly advantage of the attacker you often still come out behind even if you had Settlement at the perfect time to counter an ability. Just because there seems to be an obsession to make Psylocke a required character in PvE doesn’t mean she’s actually good. For the rest of the female character we have:
IW: Too expensive to be used in PvE, and still not playable in PvP due to this game’s massive emphasis on attacking.
Storm (all of them) - Lack of HPs is a significant drawback for everything unless fighting goons, and if fighting goons just use Patch. Her moves do pretty good damage. Too bad there are plenty of characters who can do a ton of damage that also have a lot of HP. Lightning Strike/Storm is actually quite good but green is overloaded with insanely powerful skills.
GSBW - She’s like Thor with a lot less HP, a lot less damage, and a lot slower. Yes Thor is better than almost anyone, but her role is almost exact the same as Thor (strong AE attack, green pump) so there isn’t even some kind of marginal tradeoff here.
Psylocke - She pretty much sucks but is worth building because she’s forced on the player in a stupid amount of PvE events.
Captain Marvel - Has only one decent move (black). Bullseye is weak and not worth subbing in a weaker character to deal with. Energy Absorption is decent for support, but Hulk does that too and Thunderous Clap is probably better than Hypersonic Punch. She’s probably playable but her role completely overlaps with other playable if not better characters, and because she doesn’t do anything marginally interesting there’s no possible tradeoff here.
OBW - A broken character whom D3 attempted to get rid with the level shift which seems mostly successful. Unlike most broken characters, apparently D3 is aware of her, and even if AR never gets fixed, expect something equally crazy like “OBW mysteriously starts out 20 levels lower than everyone else” if people dared to continue using her in the 3* land.
Moonstone - Playable in 2* land, but since 2* covers are trivial to get you should always OBW + Thor or Ares. The level shift pretty much ensured no 2*s are playable on the high end let alone an average one.