I am not saying that a LV 100 Chicorita is weak against a Lv 4 Pidgey. (It actually is) But compared to the other starters... We both know that it is not only brawn. EV and IV, but that is another story. Chances are that most people will not spend hours upon hours trying to get a good nature and IV'ed one during clearing and even after that it fails to most walls.