Kitana Prime and Waz have been the most successful Jades and Waz dropped her.There have been a lot of Jades in tournament play. Waz is a great player but he isn't winning even with Sonya, Geras or whoever is considered OP for the week. Jade is a super solid character.
She's far from "super solid".
And yes. Online everything is worse. Still, knowing that a character is heavily negative on everything is an important notion.