In many threads, people rattle off statements such as "if you must stick with hasty increase def to XXX or else a brave YYY will two-turn it", or "rather than jolly increase speed to XXX and you'll still outspeed an adamant YYY" almost like they read them off the back of their hand.
Has anyone put together a quick reference document for borderline cases such as this, or is it all a matter of time and experience?
iirc, there was a guide to the "magic numbers" back in the ADV generation, but with the addition of the choice items this generation, it's more reliant on pure experience and a cool tool called the damage calculator
http://www.metalkid.info/Pokemon/OnlineProgram/Calculators/DamageDP.aspx