There were no more matches to be played at the time of the article. Buchholz says that the troupe disbanded after the final stand on Nov. 26 and everyone went home.
With Buchholz not stating outright that the tour was for the championship, you're using an argument from silence -- which is always a very problematic type of argument. One great problem is that something may not be stated outright if it is understood universally. And that report from Noordwijk refers to that event (listed by Buchholz as one of the tour events) as part of a world championship series.
On top of that there is the question of how Rosewall could possibly be named number one player in the world if the tour merely solidified his position, as you say. He didn't have much activity beyond the events named by Buchholz -- certainly nothing comparable to the long series of big tournaments that the tour comprised. There was nothing else on the calendar comparable in importance to such a year-long series of tournaments (which included the top tournaments then in existence; I think only Cleveland was left out).
Laver's statement does not have to mean that there was no championship series in '64. It probably just means that in his opinion, considering everything (championship tour and all other tour matches), he had the best record for the year. A lot of us here have made that same judgment without also concluding that there was no championship series.
And Laver's statement is counterbalanced by Rosewall's statement in '93 that he (Ken) was number one for '64. They had different opinions (just like Borg and Vilas did in '77). That does not necessitate the conclusion that there was no championship tour.
krosero, Laver's claim is as subjective as Rosewall's. I still believe it's the fairest solution to rank them equal for 1964.
Cleveland most probably ways not part of the long series: It was not mentioned by Buchholz. It was organized by another promotor. It had only one-set matches in the QFs. Only five of the regular Eight were participating.