Ok: you know less than nothing about rolling resistance. (The mystery is why you think otherwise.) Carcass flexibility is the main determinant. The Supreme is about the lowest RR touring tyre (the Grandbois and Almotion are probably faster, but little else) because it uses a race grade carcass and compound; the Crossroads are poor.

Oh - and I doubt you understand width: wider = LOWER RR; you probably think the opposite.