> That assumes people will accurately self-assess and honestly report their body types. And...you'd be very surprised at how few people can do that.

I don't think that matters in this case. Even if I am way off in my self-assessed body type, and so look for a ripped Hercules of a model when deciding which fit variation to order instead of the Homer Simpson model that I should be looking for...I'm likely to pick a ripped Hercules that matches my race. So, if the fit variation options are just for choosing the value of that parameter that the race question currently answers, it should work the same for most people.