I'm fighting Primal Groudon, and I'm thinking of trying Earthquake on Swampert, his attack is 110 without Mega evolution, I tried without using Mega evolution and it only got him to half health. If I Mega, will it OHKO it? I'm asking this because I don't have access to the damage calculator.
First, taking it 0 EVs on Swampert. To get to 110 Atk stat at Level 46, 9 IVs are inputted. Here's the damage output:
Lvl 46 0 Atk Swampert Earthquake vs. Lvl 45 0 HP / 0 Def Groudon-Primal: 78-92 (53.7 - 63.4%) -- guaranteed 2HKO
On the other hand, when it mega-evolves:
Lvl 46 0 Atk Swampert-Mega Earthquake vs. Lvl 45 0 HP / 0 Def Groudon-Primal: 102-122 (70.3 - 84.1%) -- guaranteed 2HKO
It won't.
Source
In the future, use the Showdown! damage calculator given in the link. Hope this helps!
No
Lvl 46 252 Atk Swampert Earthquake vs. Lvl 45 0 HP / 0 Def Groudon-Primal: 104-126 (71.7 - 86.8%) -- guaranteed 2HKO
That calculation was made with zero ivs and zero evs Primal Groudon and perfect iv Swampert with max attack evs. If max iv and ev cannot one shot a fully uninvested Primal Groudon, then anything higher won't