Compared to the base Kama, the Dual Kamas are not a massive upgrade. The most notable gain is a jump in the Dual Kamas slide attack Damage at 252, but your base Damage is low at 42. Your weapon type will also change from the Kama’s Machete type to Dual Swords, so you’ll be looking to use a different Stance Mod. You do get a small Status Chance boost as well, but at 7.5% it’s not a great foundation to work with. With a base Crit Chance at 5%, going for raw DPS is your likely path.
Dual Kamas Prime come in with a base Damage of 70, tying it with the Twin Krohkur for highest base Damage for Dual Swords. Compared to the non-Prime, it is pretty much upgrades across the board. In addition to the higher base Damage, you’ll have a higher base Status Chance at 20% and Crit Change at 15%. Thee is a higher Crit Multiplier at 2.0x vs. the base’s 1.5x as well.