Well . . . it's an overgeneralization to say that tubeless is ALWAYS superior. It depends on the tire. Not all tires are created equal and sometimes tubeless-ready tires are much heavier and stiffer than their tubed equivalents. I've ridden Challenge tires since before most people knew gravel was a thing -- I'm a fan. But Challenge's Gravel Grinder tubeless tires tend to be pretty stiff and harsh compared to their tubed versions. (For that reason, I'm changing to Challenge's Strada Bianca tubeless for road/upscale gravel and to WTB 650b's and Panaracer 700c's for tubeless on fun gravel.)