Oh sorry, my mistake, it isn't during battle high...

ITS ALL THE TIME

so yeah, 28,800 is still correct

With Battle High 5, thats still 54000 x 0.8 to give 43,200 dmg of the 49,500 HP

With a follow up drill for 10,000 x 0.8 to give 8,000 dmg of their remaining HP

So yeah, the origional comment about a BH5 MCH being able to 2 shot a SMN still isn't wrong