as long as vendors are presenting the results of their own products, I'd expect them to de-normalize and tune the queries to leverage every advantage their engine can possibly bring to bear on the benchmark's problem set - so long as they're transparent about what they did. Clickhouse apparently does quite well on TPC-DS according to: https://aavin.dev/tpcds-benchmark-on-clickhouse-part2/ but I'd love to see a more official result that the CH engineers would stand behind.