There are many types of intelligence, few of which are measured by these tests. If you read the article, it's clear many of these people have quite a lot to learn from others, especially in regard to socialization.

I've known plenty of people who would perform poorly on most intelligence tests, but who otherwise demonstrate significant intelligence in other areas such as music, visual arts, social interaction, humor, logistics, etc. Even athletic ability/body control could be considered an area of human intelligence.