Ok, so I have had problems catching Legendaries, but that is not what this is about, this is about what poke balls did you catch legendaries in. Me, I caught all my legendaries in platinum, HG, and Emerald with master balls, I then restarted platinum and just now captured a Giritina in a Dusk ball. See? Only once did I catch a legendary in a non-master ball. So, tell me and everyone else: What pokeballs did you use to capture legendaries?
EDIT: Update. Just caught UXIE in a Dusk Ball.
EDIT: Update. Just caught UXIE in a Dusk Ball.