Superman is a dick.

https://tvtropes.org/pmwiki/pmwiki.php/Website/Superdickery

Tidal uses FLAC codec which is vastly superior to YTM’s AAC. YTM takes the lead in quantity of content with all sorts of remixes and other music being uploaded daily. I would say it will all depend on what kind of equipment you are going to use to listen to the music on and if it will allow you to hear the difference in the two services offerings.