Both FF and Tizen (read: Samsung) are a bit better known than a small Finnish company which as of yet released only a t-shirt, some pics and vids and an SDK.

It would have been nice tho if they named Jolla as an alternative for the Edge. The Edged shares more tech and concepts with Jolla (Qt, QML, full Linux with native apps) than with the primairly web-based FFOS and Tizen.