I caught a Pinsir, and lost to a Cascoon
I caught a Scyther, and lost to a Nincada
And this one really annoys me, I caught a Pinsir, and I lost to a Weedle. Yep, Weedle.
This is still for my never ending quest for a shiny stone. But I can't win. Why? I catch strong Pokemon, and I lose to Weedles and Beedrils. Is it impossible to win?