Actually, you are wrong in your way of looking at Wrexham as a town and an area. All of the places that Wrexham have bracketed within their Destination Wrexham approach attract people to the town and whether they come because the town is adjacent to these or not, to me, is irrelevant.
Places like Oswestry and Shrewsbury and many small towns have little more than Wrexham and many have far less.