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Personally, when I read the regulations, I interpreted point "b" as the total number of wins for the team.
Since a tie is possible in the tournament overall, and for example, a situation could arise where one team has 5 wins and the other has 4 wins and 3 draws, in that case, they would have an equal number of points. And criterion "b" would apply when criterion "a" is equal.
Since a tie is possible in the tournament overall, and for example, a situation could arise where one team has 5 wins and the other has 4 wins and 3 draws, in that case, they would have an equal number of points. And criterion "b" would apply when criterion "a" is equal.

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