Wouldn't all the phases technically be Type 3 as well? They're invulnerable until after you performed Data Drain after hitting it a bunch of times to Data Break them. As Type 3 is explained as "A mix of the above. The boss is technically vulnerable at all times, but can become stunned or otherwise more susceptible to the player character's attacks. Like in type 2, this may happen after a certain time has elapsed, or a special action or actions may be required." it would seem more correct in this sense.
Also, Type 4 vulnerability doesn't necessarily mean they have to be "invulnerable" for example the fight with Beatrix in Final Fantasy IX. Beatrix cannot be beaten. You don't win for surviving and she can be attacked and she'll lose HP as well.
Wouldn't all the phases technically be Type 3 as well? They're invulnerable until after you performed Data Drain after hitting it a bunch of times to Data Break them. As Type 3 is explained as "A mix of the above. The boss is technically vulnerable at all times, but can become stunned or otherwise more susceptible to the player character's attacks. Like in type 2, this may happen after a certain time has elapsed, or a special action or actions may be required." it would seem more correct in this sense.
Also, Type 4 vulnerability doesn't necessarily mean they have to be "invulnerable" for example the fight with Beatrix in Final Fantasy IX. Beatrix cannot be beaten. You don't win for surviving and she can be attacked and she'll lose HP as well.
Edited by NytFantom