Firefox Sync is touted as being superior to Chrome Sync in terms of its continuity features. While Chrome Sync promises to sync bookmarks, passwords, browsing history, tabs, payment info, personal info, and settings across devices, several users have had issues with its functionality. Specifically, the history search feature and tab syncing have been problematic, often failing to bring up relevant results or being laggy. In contrast, Firefox Sync works seamlessly and efficiently, effortlessly displaying web pages from browsing history and quickly syncing tabs across devices. Overall, Firefox Sync is a reliable and effective option for users who frequently switch between devices.
https://www.howtogeek.com/the-best-reason-to-use-firefox-is-sync-that-actually-works/