ISSUE WITH AUDITING

When we run the audit with schema granularity level, the license size of schema 'ASD' is 10 TB.
command:select AUDIT('ASD', 'schema');

However, when we run the audit on the schema with table granularity level, the sum of the sizes of tables is only 4TB command:select AUDIT('ASD', 'table');

Why is there such a difference, which one is correct?