Green Lantern John Stewart explains to Vixen why he thinks Black Canary was the best leader of the Justice League they ever had.
Green Lantern John Stewart: Tactically, Dinah’s the best chair we’ve ever had.
Vixen: She’s my friend, but we have Batman and Superman on the team. Had them, I mean.
Green Lantern John Stewart: Batman was brilliant, but inflexible. He used people like chess pieces. That’s okay with soldiers, but the JLA is made of uniquely gifted individuals. Batman chafes.
Vixen: And Superman?
Green Lantern John Stewart: The opposite problem. He’s too concerned with protecting people to use them to maximum effect.
Vixen: We’d follow him into hell.
Green Lantern John Stewart: But he’d never ask. He’d just go there and handle the problem himself. But Dinah’s the perfect combination of the two. She’s probably as good a strategist as me, if not Bruce, and she’s tough enough to lead a team made entirely of alpha dogs.
Vixen: But sensitive enough not to keep them from being who they have to be.
From – Justice League of America Vol. 2 #32