50% more cores for 13 % more performance. We were eager to find out how the new Apple MacBook Pro 15 handles the new hexa-core processors. Not very well after our initial tests, because the performance advantage under sustained workloads is small compared to the previous model, despite the additional CPU cores.
https://www.notebookcheck.net/The-new-MacBook-Pro-15-is-just-slightly-faster-than-the-MBP-15-2017-and-clearly-beaten-by-the-XPS-15.317264.0.html