Stacking query

This is lineup I’m toying with for a mono Fire team. The new addition is costume Marjana, who I’m still in the process of leveling up. The only thing I’m not sure of is the combination of Wilbur and Marjana’s specials. M’s special in costume form is target and nearby enemies get -54% defense against Fire for 3 turns, W is all enemies get -44% defense for 4 turns. What would be the net effect of casting them together? Thanks.

4 posts were merged into an existing topic: Do Elemental Defense Debuffs and Regular Defense Debuffs Stack? Why use them together? For instance, Grimm, Tiburtus, Gormek, Buddy or Wilbur with Guardian Jackal, Falcon, Panther, Arthur, Frida, Nordri, or Evelyn. [MASTER]