Sorry to bother you about this then- I do appreciate that you were able to (mostly) clear up our confusion though.

I checked 'in game' as with your screenshot and it does say "All enemy Monsters have" -1 Armor/Health for the debuffs. So, it looks like- as far as anyone knows: the opposing team all gets -1 Armor/Health not your team.

Whether that holds when the card is released is, of course, anyone's guess.