Furthermore...hmmm
the question is: who's wrong?
via http://masara.byethost15.com/SilverlightDmgCalcTestPage.html
252 Atk Terrakion Stone Edge vs 0 HP/0 Def Multiscale Dragonite: 52.32% - 62.23% (169 - 201)
via http://www.honko.freehosting.com/manly_calc.html
Stone Edge: 170-204 (52.63 - 63.15%)
http://kalashnikov.pokecenter.ru/damage/
52% - 61% (168 - 200 HP)
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Masara: 252 Atk Terrakion Stone Edge vs 0 HP/0 Def Dragonite: 104.95% - 124.46% (339 - 402)
Honko: Stone Edge: 338-402 (104.64 - 124.45%)
Mine: 104% - 124% (338 - 402 HP)
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Masara: 252 Atk Life Orb Terrakion Stone Edge vs 0 HP/0 Def Multiscale Dragonite: 68.73% - 80.8% (222 - 261)
Honko: Stone Edge: 222-264 (68.73 - 81.73%)
Mine: 67% - 80% (218 - 260 HP)
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Masara: 252 Atk Life Orb Terrakion Stone Edge vs 0 HP/0 Def Dragonite: 137.46% - 161.61% (444 - 522)
Honko: Stone Edge: 440-522 (136.22 - 161.6%)
Mine: 135% - 161% (438 - 522 HP)
Multiscale is kinda understandable, it was added in gen 5 and no additional research in damage formula was made, we all just assumed that it applies the same way old modifiers apply, so maybe we put this modifier in different spots in our formulas...
But why results without Multiscale differ is beyound my understanding. I remember finding an error in old version of masara's calc (he forgot one rounding), I have no idea if it's fixed now.