You guys are entitled to your own opinion. I'm not trying to start an argument...I've seen too much of that in the other threads.
But....If you notice, the only thing that mushroom has is a wide range. He can sing high, and low. However, does anyone ever notice that he goes off-pitch a lot? I hear it in every single one of his performances.
This Korean girl on the other hand, has very good pitch, as well as a powerful voice. Yes, she has a heavy Korean accent...but I think that's about the only major flaw.
Not trying to start an argument, just giving some reasoning. =)