Is it me, or R McL Wilson?

In “Thomas and the Growth of the Gospels.” Harvard Theological Review (1960) 53(10): 231-250), R McL Wilson says about GTh 76:

This is sufficiently close to the parable of the Pearl of Great Price to be recognized as simply another version. The only question is which is the more primitive, and here the stress on the merchant’s wisdom is surely secondary, while the phrase “the kingdom of the Father” has a Gnostic ring. (p. 230)

In Studies in the Gospel of Thomas. London, Mowbray (1960), he says:

This seems to make a clear case for dependence on the first Gospel, but a glance at the order must give rise to doubts. Matthew’s chapter of parables begins with the Sower, which in Thomas is logion 9, and continues with an exposition of the reason for the use of parables and with other sayings, … and finally the parables of the Treasure (logion109), the Pearl (logion 76) and the Drag-net (logion 8). If Thomas drew from Matthew, why did he separate the parable one from another in this way? And why do they appear in this order? … On the assumption that Thomas is based on Matthew these fact present a problem. On the other hand we know from comparison with Luke that Matthew has a tendency to assemble his material into large blocks, as for example in the Sermon on the Mount, and the fact that these parables are separated in Thomas, and appear in a different order, may point to the author’s use of a different tradition, or at least to his independent access to the tradition from which Matthew drew. (p.54)

Here, in two publications from the same year, he seems to be arguing quite different positions on the relationship between GThom and Matthew. Or is it just that I am missing something?