For those new to the stream and/or series, Choplet and company encountered Zungir the Ogre earlier on in their adventure:
Choplet fought Zungir and temporarily died before coming back again:
Switchhog, Pommelbug, and Duelwidow decided not to fight him and snuck past him to the next level of the dungeon:
Comparing the two weapons in this comic, I think Choplet should pick the Curse Breaking Dagger.
Like his debut comic says, Zungir ate 1000 cursed swords.* He probably uses these curses to his advantage, so perhaps stabbing him with the Curse Breaking Dagger will erase all of those curses.**
*1001 if you count Choplet's earlier sword being eaten.
**I hope there are more of those daggers, because there are so many cursed swords in the series LOL
Sure, the Sword Breaking Knife would be able to break Zungir's sword hand, but he'd still have his curses that he could spread onto Choplet and company.
Trivia: Sword Breaking Knives are actually real life things!
The idea is that the "teeth" of the knife would catch the opponent's sword and trap it. You would then either disarm the opponent or tilt the knife to break their sword. They were used in the late Middle Ages and Renaissance in parts of Europe and China.
In terms of practicality, they're not very good; They're heavy, and you'd need to have precise training and timing in order to use them.
Links for more info:
https://sevenswords.uk/sword-breaker/
https://www.medievalcollectibles.com/product/knights-swordbreaker-dagger/
Normally, the sword breaking knife would be great in this world. Against that ogre, the curse breaking dagger is better.
Also, can you remind me how the choplet came back to life?