成唯識論演祕 1.780

1.780

詳曰：或亦前有，前有已破非實等性，同異同彼，故論言亦。

I examine this and say: Alternatively, "too" refers to the preceding "being." The preceding "being" has already been refuted as not having the nature of substance and the like; similarity-and-difference is the same as that, so the treatise says "too".