Dragoon or Monk

[Calis]

I'm curious about something.

If Battle Litany raises Critical hit rate, doesn't that mean that it raises both critical damage and critical heals? In which case, it is not only an offensive buff, but also a healing buff. (And defensive buff for something like a critical Adloquium that further mitigates damage.)

Is this correct, or does it work differently?

Also, piercing debuff extends to MCH as well, right?