I'd say they are comparable enough that it wouldn't matter to me which one I had if I was down to one of them for home defense. -You have to realize that you are in a really bad situation if your using a knife to defend your home from someone, and it should be your last option. For what it's worth though, I like the daggert (the bigger one) because of the softer grip and larger guard. If you are legally able, I'd look into a Mossberg first.
The guards actually look pretty close now that I look at them again.