His XR-L is a joke. A single cylinder heavy POS. I had a friend that had one that was worth a good laugh and I was able to leave him in the dust on V-Star. My KX runs the 1/8th with my R1. My, now sold, V-Star was a dog and was still able to hand the XR it's ass. You WILL have no issues smoking him, put money on it. Even in the top-end range, unless you are at stock gearing. The XR will bearly pull 95mph.
Now, once I get my 300 rear tire kit and the engine worked on my Roadstar warrior, it's going to have some competition. HAHA! I can't wait!