Ahsoka also momentarily held her own against Ventress in "Cloak of Darkness," so yeah, she's just a prodigy. Anakin even states in one episode that she is beyond most padawans of her age (or something like that).
When she was first introduced in TCW, I hated the idea of her, but as the series went on I started to really enjoy her character, so I don't mind her anymore. I'm glad her character was created.