Disclaimer: I'm a noob. But:
Bicycle armor is some very strong stuff. I've come down very hard on a few occasions on a BMX (worst example from five feet above the top of a halfpipe to the concrete twenty feet below) and once on a mountain bike (I was doing about 18mph and the tree was doing 0). I've never broken a bone on a bicycle.
However, while bicycle armor would be better than no bicycle armor on a sport bike, motorcycle armor would be loads better, I think. Bicycle armor won't give you abrasion resistance that can come even close, and obviously there's no footwear for bicycles that has any useful function when riding a sport bike.
Like I said, I'm a noob to motorcycles, but there it is, for what it's worth. Hope it helps.