Table: b'z discography
Question: How does the 1st week sales data compare between B'z albums released in the 90s and those released after 2000? Answer with only 'more', 'less' or 'equal' that is most accurate and nothing else.
Step 1 (Operation, Indexing): 1st week sales
Step 2 (Operation, Grouping): 1st week sales
Step 3 (Reasoning, Aggregating): SUM, 1st week sales
Step 4 (Reasoning, Arithmetic): comparison, 1st week sales of 1990s and after 2000
Answer: more