I agree with you, I would class the XC90, Q7, Tuareg, Terraco and similar sized SUV as “Large”. XC60, Tiguan and similar size as “Medium”, the “Small” would be XC40, T-Cross, Mokka and the likes.
It is silly how they come up with classifications sometimes, even if they were using overall length the XC40 looks ‘short’ compared to others in its class.
Humanity is only humanity when all are treated the same regardless of their skin tone, religious beliefs and geography!