Pokémon X and Y Playthrough Discussion

To catch Xerneas i just reset multiple times and guessed the nature based on which stats went up the most. For example, a neutral nature, but 31 IV in the attack stats would yield something like 151/152, so anything higher than that meant that it had a beneficial nature in that stat. Did the same with speed and such too. Ended up with a speed, sp attack, attack perfect xerneas with a naive nature, so it's not terrible. Got multiple attack centered natures, which pissed me off because both legendaries are heavily special oriented (esp Xerneas and geomancy).