The 200 is different from the 100, but not insanely. The 400 of course is an insane race, everyone knows that, totally different from the 100. But the 200 and 100 aren’t that different. That’s why people who run the 100 very very frequently also run the 200. Like Carl Lewis. Maurice Greene. Marion Jones. If non-blacks can do well in the 200, I don’t think it’s that much of a stretch to think they can do well in the 100.
By the way, the bronze medalist in the women’s 200 was from Sri Lanka. Sri Lanka is right below India, and my impression is that they’re ethnically similar. So again, Dave is just racist.