Mechanics Spread move reduction in older generations

[latios777]

What type of bug are you reporting? Mechanics

What is the bug?
When playing battle doubles and a spread move like Blizzard is used. The fast pokémon always receive the first Blizzard and the slow mon receive the second hit. If blizzard ohkoes first pokémon, the second pokémon takes 100% damage instead of 75%.

Are you able to replicate it? If so, how?
https://replay.pokemonshowdown.com/gen4doublesou-2212689166-uzvic1fglwg4uxssk99xihckuyb1o4kpw
In battle tower, in turn 2 when aerodactyl faints, heatran should receive:
252 Atk Aerodactyl Rock Slide vs. 0 HP / 0 Def Heatran: 102-120 (31.5 - 37.1%) -- 78.9% chance to 3HKO

In pokémon showdown is doing 75%:

252 Atk Aerodactyl Rock Slide vs. 0 HP / 0 Def Heatran: 76-90 (23.5 - 27.8%) -- 80.1% chance to 4HKO

 

[Cazenovia]

Here's cart footage showing both of these bugs (though I'm not sure why you think they shouldn't be implemented?)

Spread Move with KOs

(singles calc) 20- SpA Abomasnow Blizzard vs. 0 HP / 0 SpD Carnivine: 290-344 (100.3 - 119%) -- guaranteed OHKO
(doubles calc) 20- SpA Abomasnow Blizzard vs. 0 HP / 0 SpD Carnivine: 218-258 (75.4 - 89.2%) -- guaranteed 2HKO after hail damage

 

[latios777]

This mechanic seems unhealthy/unfair for the metagame and I don't like but is how the original game works so is up to you and the showdown comunity if should be implemented or not. Fortunately, in 5 gen this mechanic was solved.

EDIT:
This is theorymon and need test.

Probably this mechanic happen with moves that hit all pokémon (explosion, surf, earthquake) but only if this turn...

a) You don't have a partner (because faints this turn or because you only have one pokémon active) and the faster mon that oponent has in battle dies with that spread move. Then the slower oponent's mon takes 100% damage.
b) because your partner dies with your own spread move and faster's oponent mon dies. Then the slower oponent's mon takes 100% damage (only if is slower that your partner otherwise take normal damage).
c) So...if your partner is the slower mon is taking 100% damage if the other mons die this turn probably.

For clarify better...the mechanic happen if only one pokémon is active and the others die.

 

[latios777]

For clarify better...the mechanic happen if only one pokémon is active and the others die.

Forget to say that after testing in original game, can confirm that. If you spam earthquake and you kill the oponent's faster mon and your partner and then you hit the oponent's last mon (who is more slow than the others) you hit that mon with 100% damage.

 

[Irpachuza]

Sorry but if it's on cartridge it's not considered a PS bug, we don't try to make our own games, we aim to simulate the originals' link battles

 

[urkerab]

Sorry but if it's on cartridge it's not considered a PS bug, we don't try to make our own games, we aim to simulate the originals' link battles

The video shows a link battle with blizzard dealing more damage to a foe than would normally be expected for a spread move. If PS doesn't implement that, doesn't that make this a PS bug?