User blog comment:OtterJiang/Zhanyin Lorra and Yuezheng Ling Voice Opinions/@comment-3076833-20141025020651/@comment-3076833-20141025151111

The "voice doesn't suit the character" idea has been known to do poorly when it comes to sales. Granted Iroha did fairly well for herself but many are/were put off by the fact that her mature voice didn't match her cutsey appearance and if it weren't for the fact that Ling was a popular character to begin with (so she should be able to earn sales from that alone) it could've been a great issue.

To think of it this way : The reason why we have characters on the vast majority of VOCALOIDs is because the character associates the voice with a "person" albeit a ficitonal one. If people have a hard time connecting the character to the voice because they conflict with each other then it's going to put people off the voice/character and thus their popularity is going to fall.

Personally I am not to bothered by this as I am mostly "voice over character", even so I understand why having a character is important and why it's just as important to ensure that the character fits the voice.