Whats wrong with your head?
"Sport" has many meaning in it. Is Football a sport, right? How about swimming, is it a sport, right? Do player play the same way between football and swimming? Of course NOT!
Same concept with vehicles, sport vehicle has its own purpose and competition. Fast car sure, you can call them sport, SUV on other hand is still sport because it could have off road competition.
Sport is sport, period!
Nothing change the fact that this SUV called Suzuki Samuri has ill fate with roll over accidents because of its natural center of gravity is much higher. Why higher center of gravity? Simply put, it is because it can go off road. On other hand these sport cars designed for speed has much lower center of gravity, why so? So that they can go faster without flying off up to certain speed.