I don't buy this. For a start, Wales have got one of the best defences in the qualifiers, that's not down to Bale. And second, there are plenty of examples of a team having a class player but not getting anywhere. Off the top of my head, N Ireland with Best, Finland with Litmanen and, er, Wales...
Or is it that the other nations have grown stronger? Wales, Iceland, Austria, Slovakia, N Ireland and Albania all look like qualifying (and most of these would qualify if it were a 16-team tournament). That's some transformation