According to simulations run on different futures of Ignis and humanity, Revolver says that Lightning's is the only one that leads to mutual destruction.
But it can’t activate 
against Borreload’s effect!
doch gegen diesen Effekt Borreloads
kann dieser nicht aktiviert werden!
pero no puede activarlo
contra este efecto de Borreload.
Mas ele não pode ser ativado
contra o efeito do Borreload!