>>36506830A level 19 Starmie that knows Scald, 2 levels below past incarnations of this Starmie, that was seen getting outsped and (possibly nearly) OHKO'd by a Level 18 Pikachu using an even stronger version of an Electric Type Return.
And you need a Level 20 Pokemon to enter the Gym to begin with, so imagine the average player who only uses their starter but catches everything they don't own yet walking in to fight that Starmie.