The state reached through Sankhya is the very same state reached through Yoga. Whoever sees these two as one — that person truly sees. Krishna repeats the word 'pashyati' twice for emphasis: sees, truly sees.
Two travelers arrive at the same fair from two different villages. Their routes were different, but the destination was the same. Knowledge and action both lead to the same Paramatma. Recognizing this unity is the mark of real understanding.