Hmm, I'm not exactly sure what he meant by that, and in what context he meant in it.
I know Louie has said that the guys with big quads tend to have weaker squat because they are less hip dominant, and the strength in the squat comes from the hips. So I think I'm not sure what he means by recruitment, because obviously the quadriceps are stressed different from a PL squat compared to a Olympic lifter squat, just look at the hypertrophy differences in the two lifters.
I know that the quads are definitely stressed different from a narrow to a wide stance. In the narrow stance, I feel my quads fatigue first, in the wide stance, it is hamstrings. What that means in fiber recruitment, I'm not sure.
Do you have a link to that video>