Intel's Ice Lake platform performs convincing in the first reviews. With the Lenovo Yoga C940 convertible we recently reviewed another Ice Lake laptop, which directly competes with Dell's XPS 13 7390 2-in-1. In terms of battery life the Lenovo Yoga C940 is even better than the XPS.
https://www.notebookcheck.net/The-Lenovo-Yoga-C940-14IIL-with-Ice-Lake-is-a-strong-opponent-for-the-Dell-XPS-13-7390-2-in-1.438954.0.html