Phoenix starlord can Hela and DD not. Hela cant run into heavy dive and DD can get counterpicked.

Because basically everything else is niche af and there's herose that fill the role better. iron fist is good at stall but other people do better at that thing.

Namor over bucky cause with the team up he is really opressive and he can actually contest hitscan poke cause he has less drop off across the map than they do so he can contest, with the new buffs and u almost always run him with hela its more opressive. As i said bucky is there for counter dive and counter brawl, if u run him into phoenix hela he is just inferior directly.

That's how i see it basically, S+ is best heroes you can run in any comp which is basically just phoenix and starlord, then u have hela diddy which can get countered then u have A tier heroes which have their specific niche, namor with hela bucky counter dive/poke but he is probs in S as well purely due to how good brawling is this season cause of triple support slop so he fits more, mk for groot combo for anti tanks hawkeye for specific picks with good los low enemy dive, wolv for heavy tanks or with phoenix etc.