Just trying to verify this off of bulbapedia because the wording is kind of funny and I need to be sure.
Does this mean, for example, if I'm breeding a bulbasaur 20/20/20/20/20/20 with my flawless ditto, I will be guaranteed to get a bulbasaur that will have 3 perfect stats in any of the 6 stats?
No. It means that the baby will have 3 stats that are either 20 (from the bulbasaur or 31 (from the ditto). The other 3 are randomly generated.