^ Um, really, the ranges on all three of those people are pretty much the best things about their voices!!
Well, honestly, Hikaru's range is exaggerated a bit in the studio, because I've rarely seen her hit high notes correctly live, but it's still definitely above average. And I've seen both Kuu and Mika hit amazing notes almost perfectly live. If you don't think they're the best singers, that's understandable, certainly. But they don't have limited ranges, by any means.
