The i7 HQ pulls ahead or equal in 2017 to 2018. If they could maintain the i9 power for anytime it would be a killer. Oops, guess not!
https://browser.geekbench.com/mac-benchmarks/
Are we even looking at the same results?
In any multicore test, the 6 core tears away from the HQ, and in single threaded tests, Coffee Lake should still be ahead.