[Matrixbeast]

Do you know about Time Force? Because Jen's personality isn't "Smart."
She's determined. She's brash. She's head strong. She's tactical. She is "Smart" in a sense, but "Smart" is not a personality.

Superficial traits aren't always just outward physical appearance. You're taking a fraction of Jen's personality, declaring it her sole trait, and drawing a comparison.

Your first criteria, role, is already loaded. Leader? There's only one leader on a team. So of course there's going to be a forced connection there.
However, that means, in the long run, Blossom is more similar to Alex, the original Time Force Red and the original Time Force leader. Why? Because Alex is a smart, team oriented fighter who focuses on battle tactics and by the books fighting.

Thus, Alex and Blossom share more traits (Role and personality, since you see "Smart" as a personality) than Jen and Blossom, as the only trait Alex and Blossom don't share is their clothing color.

Also, you're unfairly forcing a connection.
The Powerpuff girls are intentionally simple. Not just design, but in character traits. Buttercup is a short tempered roughhouser. She rarely strays from that. Bubbles is a happy go lucky, naive dimwit. She rarely strays from that.
(Note: Rarely. There are episodes where they do stray, but they never alter status quo and changes in PPG rarely stick past the episode it's introduced).

You're taking a team of 3 characters intentionally designed to clash and then putting them up against one other character and asking for a comparison, knowing full well that only one of them will match, just because they both happen to be pink.