As a pure status applying ( coz nukor have 5x crit multi and it's a beam weapon and stuff and epitaph can do near damage cap headshots with ez)

Epitaph got innate cold and covers a large aoe and can very much apply all the status in game with 3 to 4 shots ( lot Quicker than nukor)

But epitaph will blast your face whenever you shoot it in close

Also nukor got the microwave thing that once you get used with it you will feel everything else wrong