Ciara was always compared to Aaliyah to the point that she had to pretend that she was never influenced by her, same with Tinashe.
If you watch Ciara's Access Granted for "1, 2 Step," she talks about the Aaliyah comparison and how it makes her sad when people compare the two.
Considering people here like to make fun of (and lie about) my age, then I would know. I can actually remember when Aaliyah was alive and when Ciara was successful. There was always the Aaliyah comparison, hence why Ciara and Aaliyah fans have been clashing since '04.