Matches in this league mean absolutely nothing. Recently, for example, the Netherlands won 4-1 against Belgium. Do you really think it will be the same at the World Cup? That game could also have ended in 1-8. At the World Cup you see a completely different team. As mentioned before, many players but also coaches consider these matches as practice matches. The only thing is that it counts for the FIFA ranking, in which points can be earned. Those matches are played when the competition is already over, nobody wants that of course. And the risk of injury is also quite high because of that.