in that sense, sort of.
for normal monsters, you do 25% of it’s current HP in damage. with CF (6) making it +300%, or 4x .25 = 100% of current damage. the recent nerf only lowers the HP to 1 HP in this case, now. technically, it doesn’t one shot Normal monsters, but since there is only 1 HP left, it’s basically a one-two punch knock out.
for Magic monsters, it’s .25 x .25 = 0.0625 x 4 (+300% CF) = 0.25, or 25% of current damage. CF (8) gets it up to 37.5% of current damage.
looking at the video above, this build is doing a lot of damage to the HP left for Magic+ monsters after CF, so it is a good fast killing build. and the high CB % helps lower the HP fast also.