Majority is just an advertising keyword. Mog said "all songs were" 320kbps but when I actually checked, totally not true. At least Spotify is honest about it.
The dirty truth is that all subscription-based models are using the same tracks as each other. They have to cut deals with the record labels & the record labels gives everyone the same $hit. If a streaming service buys the license for the song is owned by a certain record label, it's not like different buyers get different $hit. they all have the same $hit. lol! It's not like you can get the song anywhere else legally.
edit: i'm not saying beats subscription music streaming is bad or spotify is better or anything like that. beats has cool features & whatever. but your argument about quality is simply not true. it's just marketing lol.