Me and a friend have noticed that Great Balls tend to be more reliable (in a pinch,) than Ultra Balls. We have been able to catch Legendary Pokemon with Great Balls, while Ultra should have been better. When ever my friend and I go into a battle, Legendary or normal, the Pokemon, weak or still of HP, they break out, even when having a status problem. The Great Balls, however, almost always catches the said Pokemon. Just yesterday, I tried to catch Articuno. I used 10 Ultra Balls, but all of them failed, never going past one shake. (Articuno was in the red. One more move would kill it) I used ONE Great Ball and Articuno was caught.
ΛWhats up with that?