Yes, but Babs also had Batman's help. Stephanie has been on her own for a good chunk of her career. Babs has had at least two support networks: the Bat-family and Task Force X. Every time Stephanie gets a mentor (Black Canary, Batman) they abandon her for whatever reason.
So comparing her worst, weighed against the fact she was working up a hill called Mt. Batman, to Babs isn't really a fair comparison. That's like saying Superman is a better hero than Batman because, and only because, he has powers.