No, because Fizz can still contribute to teamfights beyond damage.
Fizz throws an ult and it's guaranteed to single-out one champion and disrupt the flow of a teamfight.
LeBlanc has only damage and a single target slow which can maybe root somebody, but it has a rather long setup time.
Not to mention LeBlanc can't do shit when she gets pushed to the tower.
Fizz is guaranteed to at least get most of the wave for a laughably low mana cost regardless.
He got +2 CD to Playful Trickster at all ranks.
Compared to how other champions can get nerfed, this is nothing.
With increased CD it's on par with most hard CC abilities champions he faces have.
I'd say it's still way too forgiving.