As Rhydon learns fighting moves, Aggron learns Aqua Tail, Magnet Rise and Surf Let's see what Rhydon learns: Brick Break, Focus Punch, Superpower, Hammer Arm. Almost all powerful moves.
A.) If Aggron doesn't have sturdy, Rhydon wins. Fatality. B.) If Aggron has sturdy, things change.
a.) First check. Wild pokemon who were never captured.
>Since they are wild pokemon, I'll give both no EVs.
>No Eviolite
>They know how to fight, because they had to survive on their own.
>They can have all types of moves.
With both pokemon playing at the best of their capabilities, Aggron has a winning strategy that works 100% of the time.
First turn: Aggron uses Bulldoze. Rhydon uses EQ. Aggron lives with Sturdy. Rhydon has lost some HP, but still in good condition.
................................................... Rhydon uses Bulldoze. Aggron and Rhydon live and are both at -1 Spe
Second turn: Aggron uses Surf. Rhydon faints.
b.) Pokemon have been released
>More battle experience, more competitive sets
>Both know how to predict moves >Rhydon can hold eviolite
>We don't know what Aggron holds
>Standard Defensive EVs
Aggron: 252HP / 52Atk / 200Def Rhydon: 200HP / 52Atk / 252Def
Aggron has: random move, Bulldoze, Surf, Magnet Rise
Rhydon has: EQ, Bulldoze, random move, fighting move
As Fighting move the most viable is Superpower, because Brick Break does little damage and Hammer Arm reduces speed, which is essential so he lives.
Now it comes to prediction. As Aggron is faster, two Surfs kill Rhydon. Going for EQ against sturdy Aggron is a wrong move.
Instead of Bulldoze, Aggron might use Magnet Rise. Therefore starting with EQ, Rhydon is screwed. He knows that. So he doesn't use it.
It comes to prediction now.
i) If Aggron goes for the Surf, it's better to use Bulldoze first and then, while being faster, hit with EQ or Superpower
ii) If Aggron goes for the Magnet Rise, it's better to use Superpower, then live the Surf and kill with another Superpower
>If Aggron holds one of the following items Weakness Policy, Custap Berry, White Herb, Salac Berry
it pretty much won the battle.
In the end, sturdy Aggron dictates the battle, and having the luxury of going first in the first turn, it is more likely to win this.