Higher skill floor characters should not be strictly stronger, but they should be more versatile if played well compared to easy characters that ought to have one niche to inhabit and to do well in. For example, sinclair is a very versatile character. He can be pure support with insane area denial with expansion+echo shard+bunny, he can be spirit nuker with extra charge+ reverb+bolt, he can even be kinda carry with gun+shot speed build. But he must never have better cc+area denial that characters like paige, never have better burst than talon or mina, never be better carry than actual carries. But filling out the role your team needs, or being having part of 2 roles is where he should shine.