I don't necessarily disagree with your conclusion (because I don't have the data either way), but I own a late-2015 Macbook Pro Retina and certainly wouldn't cl

I don't necessarily disagree with your conclusion (because I don't have the data either way), but I own a late-2015 Macbook Pro Retina and certainly wouldn't classify it as super-thin. It's not particularly thick but it's no lightweight either.