9423403th Blissey power up question

1)97%, 15 ATK 15 DEF 14 STA, Zen Headbutt Psychic, LVL 20, 1837 CP
pros: Higher IV(gym placement), ZH is Effective against Fighting types(i live in a Heracrossland).
cons: the pros of number 2.

or

2)84%, 12 ATK 12 DEF 14 STA Pound Dazzling Gleam, LVL 20 | 1788 CP
pros:2 bar charge move effective against, Dragonite, Tyranitar, Champ and Heracross.
90 candies, lots of dust