Two very different areas and in its strictest sense we're comparing apples and oranges. In the main, Paisley is a single large town, whereas Motherwell isn't. Its a large combined urban area comprising several towns and villages a bit like Levenmouth or Stoke. Add in the likes of Wishaw, Netherton, Craigneuk, Newmains, Cambusnethan, Carfin, Newarthill, and New Stevenston and the picture changes somewhat.