I think track riding on a surface unmolested by pot holes and deteriorated asphalt is different than what most of us experience on our rides. That uneven , unpredictable surface is better ridden on tires that relieve fatigue not encourage it. Just my observation after about 50 years of riding, but no formal racing experience. I used to ride on 23’s but found that switching to 28’s improved not only my average speed but improved the experience…. But I am not 20 years old any more either!