in gen 5, if a male pokemon holds an everstone in breeding, there is still a 50% chance of having the same nature, correct?
This is incorrect. While it was true for Emerald and DPPt, the effect was changed in HGSS from only working with females to working with both males and females:
Bulbapedia Evolutionary Stone Page said:If held in the Pokémon Day Care by a female Pokémon or Ditto, Pokémon bred will have a 50% chance of having the nature of the holder.EDPPt
If held in the Pokémon Day Care by either parent, Pokémon bred will have a 50% chance of having the nature of the holder.HGSSBW



