Thread:Gregory Naruto/@comment-920954-20170313064716/@comment-24442878-20170313123743

I found 'em in Discord and on Forums. :)

Goku needed to power up the blast using Super Saiyan, Kid Buu would handle the Spirit Bomb without Super Saiyan easily; and it couldn't even kill Frieza. Not only that, but North Kaio explains that it only will affect bad people. So, its' power can be subjective, since it depends on the person's "evil" level.