How does the cooking capacity of the Fusion compare to the Grill (Discontinued) or the Sport?

The Fusion’s cooking capacity is 3.01L (101 oz) which cooks for 4-6 people.

The Sport’s cooking capacity is 1.2 L (40 oz) which cooks for 2-3 people.

The Grill’s cooking capacity is 7.3 L (246 oz) which cooks for 6-8 people.