The bottom two make sense.

8 super mega = 48 reg.
24 double = 48 reg

So 1 super mega = 3 double = 6 reg
1 double is ⅓ super mega or 2 reg 1 reg = ⅙ super mega or ½ double

But how many giant rolls is 1 super mega? Is that more or less 4,000 sheets?

I guess $/kg (or any non-metric alternative) doesn’t say much either.