To first understand if one's measurement is greater than the other, we need to convert one of them to the other.
Let's look for how many fl oz are in 1 cup (c).
1 cup = 8 fl oz.
We have 13 cups.
13(8) = 104.
There are 104 fl oz in 13 cups.
So;
96:104.
13 cups > (is greater than) 96 fl oz.
I hope this helps!