First of all, most arguments online regarding the topic uses the pokemon equivalent of a lion. Instead, we will be finding out how much damage a lion in real life would deal in game. For this, we will be using the move Magnitude, since it directly scales a real life event to pokemon move power. A magnitude 4 earthquake is 10 move power, and a magnitude 10 is 150 power. Since the Richter scale is logarithmic, we must assume that moves also logarithmically increase in power as well.
First of all, according to the website How Stuff Works, a magnitude 4 earthquake is equivalent to 6 tons of TNT. The website mistakenly uses the base-10 scale for calculations, however, as each point of increase in magnitude is about 32 times stronger. Using this, I made a chart detailing the strength of each magnitude, as well as a comparison to the 'Fat Man' nuclear bomb detonated in Japan.
Now, lets calculate how much damage a lion can do:
A lion's bite strength is about 4450 newtons (also 4450 joules), approximately equal to 1.063575526 lbs of TNT exploding, which is about 0.0008333333333 of pokemon move power.
Now, lets look at the pokemon damage formula:
According to Bulbapedia, the damage formula is:
Ignoring everything else, the main variables we need to focus on are: Level, attacker's attack stat, and defender's defence stat.
Let's assume that the lions are all level 100, with an attack stat of 500, and the defender has 73 defence, the average for every pokemon. With this in mind, the damage that a lion deals is ((((2*100)/5+2)*0.0008333333333*500/230)/50)+2, or 2 damage. Because the lion's bite is so weak, everything besides the +2 at the very end don't matter, and neither does burn, any screen, # of targets, or weather.
Now, 2 damage isn't a lot, but if there are 1 billion lions, that's 2 billion damage, right?
Well, let's look at the ability, Friend Guard, which reduces damage taken of ally by 25%. This works multiplicatively in triple battles, so the friend takes about 47% less damage when there are two allies with friend guard.
There are 9 pokemons that learn friend guard, meaning that every pokemon besides those 9 will take 7% of the original damage dealt. Since damage rounds down when under 0.5, and 7% of 2 is under 0.5, pokemons will never take damage from any lion.
Now, let's look at a different problem: PP. Pokemons all have a limited amount of moves they can use. This means that they will eventually run out before being able to KO all the lions, leading to a draw. However, allow me to introduce the ability, Regenerator, which heals the pokemon by 33% when switching out. There are 27 pokemon with the ability, and if we build all of them to be fast, but with 0 attack investment, even will struggling, they won't do enough damage to take more than 33% hp, meaning that they can do infinite damage given infinite time. Thus, Pokemons win.
Tl;Dr, lions do no damage, pokemons take no damage, meaning pokemons win.
by supermonkey1235