It’s odd how the GS Ball is the best ball here, considering that the GS ball in the anime nor in games has no data on it. It’s just an item with no “function”, but yet is rarer than a Master Ball.
as a pokemon expert, I confirm that the treadmill is the strongest Pokemon. It can use a attack called "speed of light" as the name says, it can go fast like speed of light. With the move it can destroy any pokemon. Get on it and you die immediately. Be carefull, Trainers!