We read in Bnei Yissaschar: “From where do we know that gematriot that differ by 1 are considered equal? We learn this from Yaakov's statement that Ephraim and Menashe (gematria of 726) are equivalent in his eyes to Reuven and Shimon (gematria of 725). And when did Yaakov say that? On the occasion when he reversed his right and left hands.”
But this implies that two gematriot that differ by 2 are also the same, because each is equal to the number between them, from which they differ by only 1. Likewise if they differ by 3, etc. So, by transitivity, they are all alike. Is there a response to this argument among the commentaries?