Devil Scythe R Type Bug?

Alright so I used the less risky method that you provided and crunched some numbers. I damage-tested on White Spiders in Emain Macha with an Untamed Violent Devil Scythe R 3 Step.

Stats

Damage: 169 - 301
Balance : 80%

Since I was trying to find out whether the weapon's damage is considered One-Handed or Two-Handed, I predicted the damage for both Smash modifiers (one-handed and two-handed) and calculated the damage output.

OHSmash = One-Handed Smash
TWSmash = Two-Handed Smash

Smash w/ One-Handed Weapon w/o Special Upgrades

(301 dmg x 4.2 OHSmash) x 2.5 Crit = 3160 Dmg

Smash w/ One-Handed Weapon w/ 3 Step R

(301 dmg x 4.2 OHSmash) x 2.68 Crit = 3387 Dmg

Smash w/ Two-Handed Weapon w/o Special Upgrades

(301 dmg x 5.04 THSmash) x 2.5 Crit = 3793 Dmg

Smash w/ Two-Handed Weapon w/ 3 Step R

(301 dmg x 5.04 THSmash) x 2.76 Crit = 4187 Dmg

I regret to say this but it's not a visual bug since I was crit-smashing for 3387 Dmg at max. Although the damage output isn't considered Two-Handed, enchants that limit two-handed weapons seem to allow you to use said enchant on the Devil Scythe. I will probably try to get to Step 5 later in the future but I don't intend to do so any time soon.