I actually had that race. And if you think you think you will win any race on your Ninja, then you obviously haven't experience high end long distance running.
I raced a guy on his CBR1000 (with hard bags), from the the Saint Lawrence Straight to Belleville. I was on my K100RS Special Edition, with tank bag, duffle bag, and tent. His bike was my old bike, and he was from Boston going to Toronto. I sold my CBR1000 before I moved to K's, and it was the correct decision for our style of riding.
At 7 in the morning he blew by me on the left side so fast his wind blast shook my bike. I thought it would take a while to dial him in, but I did, within about 45 minutes. I kept my KRS rolling at 200-210kph, and he eventually was on my right. He couldn't sustain high speed cruising for very long. He could get up to the mid 200's, but only for a short time. The reason is, he told me why he couldn't keep up to me when we would stop of gas. The wind would put so much force on him that his neck would getting very strained. As I sat in a nice pocket of still air, with only one hand on the bar, he was getting tired trying to stay with me. We raced for 9 hours, only to stop for gas, of which he consumed more. His brand new honk'n CBR1000 was and is not faster than my K100RS, he asked me to slow down for the last 3 hrs of our trip. I agreed to keep it at 140 on the 401, and he very happy to cruise behind me to my right. There is now doubt that his bike is "faster", but in reality, where we really ride, is isn't faster. I will race anybody any time with my BMW, as long as they are riding one of those crotch rockets. Over the long run, the CBR, Ninja types are plain slow.
So, if some sport bike, like a Ninja or CBR asks for a race, take him up on it. Not only is the victory easy, the money you make selling his bike can pay for some new toys for the kids. You know the old saying about a fool and his money? Well, a fool is just that, a fool.