The reason his 'sob story' is mentioned at all is because when they edit the show they know who is going through to the final 24/12. They wouldn't mention it half as much otherwise. And to be fair, they shouln't call it mixed if it was all females, but i dont think Rachel was that good, so maybe she shouldnt have been in the final 12, and her 'sob story' is worse the Daniel's, and she screwed up her song anyway.
And sorry to rant on, but you shouldn't have an opinion on someone by just their sob story because you can't judge someone unless you've been in their shoes.