How could the Playing Time rating differ so much between these 2 dynasty recruits?

They are the 36th and 37th WR in the class, both physical type WR, identical ratings for my school in everything except Proximity to Home(which is expected) and Playing Time, which I didn’t realize was this fluid among players this close in ranking. Is this an indicator of their overall rating? Basically saying Manny Ebron would crack the depth chart because he’s a higher overall and the other guy might not? Any help would be appreciated.