Well, I am from Indonesia, and I don't really know about other V fans in Taiwan, but ... IT DOES HAPPEN, White Houses not only hit the top thirty in Indonesia, it actually beaten up other artist such as Linkin Park and Limp Bizkit and peaked in number 7. As for Who's To Say, I don't remember if it does reach the top thirty, but I remember that in local radio in my country said that, "Who's To Say" is one of many song that get so many request from listeners.
Just a little fact about V that you may not know, 'Be Not Nobody' reach a platinum in Indonesia (150,000 copies sold)