There's this thing where you might be getting hit for 2 but you have something that reduces that damage type so youre only going to take 1, the preview above the baddie is 2, but the healthbar result preview is -1. this is confusing.

you could flip it so the baddie preview is how much theyll inflict after defenses and show 1, which would match what the healthbar preview shows, but then you wouldnt know that normally that attack does 2 and it only does 1 because of gear. this is confusing.