OK, so a wider tyre at the same pressure as a narrow tyre will have lover rolling resistance. However, it is impossible to get wide tyres to >100psi, that is why pro’s and serious roadies use 23s.
To answer the initial question, when I first got my cross bike to replace an old roadie, I put the 23mm roadie tyres on and the cross bike was faster. The old roadie was very old and flexy though.
Now I run semi-slicks, 35mm, and there is not much noticable drag on the road. Pressure is ~70psi, but it’s going up now the dry weather is here, too many pinch punctures on rocks!!