The sport is suppose to be used for active people, but I imagine (at least the screen) is more easy to damage. Is that right? I have no idea about the stainless steel vs silver aluminum body (though I assume that's more resistant on the normal watch as well), but isn't sapphire suppose to be the hardest to scratch after diamond? So why would the easier to scratch watch face be put on the sport watch that you expect to be used more in situations where it could get scratched? The only real benefit I see is that it's "lighter," but honestly, if the weight of a watch is not a real factor in a workout, the things are light enough already.