Hello.
- In Gen 4 on Pokémon Showdown, Doom Desire always ignores boosts from items, even when Jirachi is still out of its Poké Ball. This is maybe the case in other generations but I didn't test. In
this testing battle the Skarmory only took 282 instead of 358-423 (calc below) which would have OHKO it.
- In the Damage Calculator, in Generation 3 and 4, Doom Desire is affected by the hit Pokémon's type:
252+ SpA Choice Specs Jirachi Doom Desire (120 BP) vs. 252 HP / 4 SpD (70 SpD) Skarmory: 179-211 (53.5 - 63.1%).
252+ SpA Choice Specs Jirachi Doom Desire (120 BP) vs. 252 HP / 4 SpD (70 SpD) Steel-typeless Skarmory: 358-423 (107.1 - 126.6%).
Also, if you take time to correct this in the Damage Calculator, can you update Pokémons sets in it pls..