@Fyrewolf5 Though Laconium Axe, despite its appearance and sword animation, only hit one target.
And when it comes to single target weapons, there is just a crap load of it that will out damage DF on 1 vs 1
Now I think your little demonstration is lacking something, since you're using the special of all those weapons, except DF.
So yeah, basically am too lazy to put on the "transparent skin" (but anyway the damage number are stacking on top of each other so it's barely readable), but my damage (as a Hunewearl, which has less ATP than Humar) is ~810 and ~1250 in critical.
Now with DF special directly facing a monster, the special hits 5 times. So that's basically ~4050 damages or ~6250 with critical, each time you launch your special.
Now ok, you must be close from the monster (well if you're not, you're just hitting more monster with less damage) and you need your HP below 10%.
What about Zanba ? Berzerk on a sword will also get your HP very low quite quickly, and it doesn't stop at 10%.
What about Vjaya ? Almost no drawback on that one, very good weapon. But well, you can't just spam it without losing all your meseta at the speed of light. Hell, can't even do a complete run with Vjaya if you got your 3 M mesetas (inventory + common bank + character bank)
Each weapon has it's avantages and disadvantages. At the end, if you're not using the special (because the situation is dangerous or you don't meet the prerequisite), Dark Flow is the strongest for crowd control (as a hunter) because it just has the most ATP.
Personally, I'd use all 3 of them (not on this huney of course !) depending on the situation. Keep in mind that Zanba is especially good with Dark Flow, because you can drop your HP smartly : by dealing damage to monster instead of killing yourself by fighting the wind (coucou Girasole, coucou Lavis).