It doesn't deserve to move up. Isaia has a ton more handwork. BC is entirely machine made like Zegna, with some amazing cashmere. The fabric doesn't warrant another spot up (just a note in parentheses)
PRL is definitely satisfactory. Half canvas. Remember that we're grading on a curve here, and that Polo is 99.9999% better than anything on the street.
I'm with Aravenel. Polo is head and shoulders above BB 1818, Suit Supply and the other "Satisfactory" suits.