As with the Lenovo ThinkPad X13, the performance increase gained through Comet Lake on the ThinkPad X13 Yoga is marginal compared to its predecessor. Therefore, Lenovo could have definitely saved itself the leap to the current Intel CPUs.
https://www.notebookcheck.net/ThinkPad-X13-Yoga-Intel-update-wouldn-t-have-been-necessary-this-year.496626.0.html