There's a big difference between the two players' situations, though.
Brandon Wimbush had two years of practice and experience in the system, in addition to those years of strength and conditioning. He also had pretty much all of the first team reps in practice in the spring of 2017. He's also playing in a system that seems to be built for his skill set (assuming he can throw for reasonable accuracy).
Quinn was fresh out of high school, with only a very limited amount of practice, not much S&C, and played in a crippled version of the West Coast, with an inept OC who couldn't recognize a zone blitz, even when neon signs were glaring in his (Bill Diedrick's) face.