This is a vocaloid break up song: https://youtu.be/9pQR4a5sisE
The first isn't bad by any means. There's a million break up songs and that's one of the best sad ones. Most are just... angry? Blaming? Empowering? They work fine. They sell records. Many have have a billion views.
But the second one, even with the clunky translation, strikes somewhere deeper. It's written by someone who had enough time ruminating on a break up. The ending hits a little harder, because break up songs are about endings.
Both are sincere, but the first feels more formulaic. I'm inclined to think the first one is the soda.
I feel Suno leans towards this group of songwriters and poets who have something to say. Sora doesn't.