I think im doing this right
So ima assume you're using the Kirin Bolt Ultimus and the Lagia Sword. We'll use Monoblos as our target monster since he's weak to Thunder.
The damage formula can be simplified to
Physical Damage = [Power * Motion value * Effectiveness]
Power is the raw divided by a set number for each weapon that basically makes all the weapons more or less the same. You can find the values online or just look at kiranico which gives you the true value. So we have to find the true damage of the weapon. Kiranico gives us 130 for Kirin and 180 for Lagia
Motion value is basically how much power a move uses to dumb it down. You can see a list for all the moves
here. So lets just saw you do the basic dash attack which is 18% of the true. So we got Kirin at 23.4 and Lagia doing 32.4 so far
Now for elemental damage. Thats actually pretty easy. [Elemental power shown / 10 x effectiveness]. So we get Elemtental true which we find that Kirin is 48 and Lagia is 18.
Now that we have those numbers, we add our sharpness modifiers, which at blue is 1.2x attack and 1.06x attack. New numbers are as follows
Kirin physical: 28.08 element: 50.88
Lagia physical: 38.88 element: 19.08
Then we look at the monster defense. Say you attack Monoblos at its Tail tip, which has 60% effectiveness for cutting damage. So we multiple the physical numbers by 60% so we get Kirin at 16.85 and Lagia at 23.33
NOw for elemental effectiveness. Since we're attacking the monoblos tail tip which is 30%. So we multiply that and we get Kiran at 15.26 and Lagia at 5.72. Add both number together and we get
Kirin at 32.11 and Lagia at 29.05.
But what if you dont attack at somewhere that thunder isn't Super Effective at? Say its legs with 35% physical and 10% elemental? Using the same formula, it actually comes out to
Kirin at 14.91 and Lagia at 15.51
TL;DR: If you're hitting something that has a 15 weakness to thunder, go elemental
