The last days (since gen3 is out) it happened a few times to me, that I used a superberry AND a hyperball on a basic pokemon and I immediately catched it without the ball even wobbling around.
Now I'm curious what actually caused this? was it the combination of hyper ball and superberry? would have one of the two been sufficient?
And I couldn't imagine this works for any pokemon, so if are some excluded, what are the requirements for a pokemon to be instant catchable?