"Small logical errors" in Sklansky hand rankings?

[WRX]

In his thesis, available here, p. 42, Darse Billings states, "There are also a few instances of small logical errors in Sklansky's rankings. For example, 43s is ranked in Group 7, ahead of 53s in Group 8, but it can be shown that 53s logically dominates 43s, because it has the same straight and flush potential, with better high-card strength. Similarly, 52s dominates 42s and 32s, but 52s is not ranked in any of the eight groups, whereas the latter are members of Group 8."

The Sklansky rankings he is using are from Hold'em Poker for Advanced Players.

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