we ate at both last week...Mama for dinner and Sci-Fi for lunch. We had ressies for Mama and we still had to wait 30 minutes to be seated! Food was good, but nothing spectacular.
Lunch at Sci-Fi was good...the atmosphere is just fun for the kids and the milkshakes are awesome!!
We did not have ressies at Sci-Fi, but got their right when it opened for lunch and they said we could sit at a table, not car. I said fine because I knew the kids would still have fun. As the greeter took us in, he seated us at a car because he had heard me ask a hostess that if there was a no-show, if we could sit in the car.
Based on our experiences last week, I'd pick Sci-Fi