I evolved 1 blissey and got the worst moveset defensively with Pount/Psychic.
I was lucky enough to hatch a 96% Chansey today. I evolved it and got a blissey with pound/DG. I have just enough candies to max train this Blissey for my trainer level.
I was very happy to get DG but I was also hoping for ZH as the quick move.
My question is how important is ZH for defense on a Blissey? I feel like that psychich type damage is huge on defensive against fighting type pokemon that would attack into Blissey, namely a Machamp.
I am leaning heavily in powering my Blissey up because the IVs are fantastic and i got DG on the charge move.
But the SE bonus is actually the same as STAB bonus. So while it's true that Zen Headbutt would get a bonus against Machamp and other fighting counters, keep in mind that Pound will get a bonus against any opponent. It's still the worse of the two, but not by that much, plus yours has the best possible charge move and (almost) IVs.
Power that pink fattie up asap.
I'm going to say that both non-psychic ZH moves will be top. HB might get ranked a little higher from a pure numbers point of view, but DG will be better in practice if it gets super effective. Or DG will be better straight up. I've seen numbers suggesting both (includes ones I've produced). Either way, both ZH will be better than both Pound, then the two psychic charge moves will be third.
I would suggest that Pound is far superior to Zen Headbutt for Blissey. That's because Pound generates far more energy than Zen Headbutt does.
Specifically, Pound generates 10 EPS while also producing 11.7 DPS, while Zen Headbutt generates a mere 2.7 EPS while producing 10.9 DPS. From a DPS perspective, you get a 25% bonus due to STAB from Pound which is the same 25% bonus you'd get in effectiveness from Zen Headbutt, assuming you were attacked by something weak to Psychic.
But DPS isn't the issue, the lack of energy produced by Zen Headbutt makes it far inferior to Pound in this case. That being said, it's possible that ZH and Pound may end up being close to equal for defense, but I'd suggest that's a best-case scenario for ZH.
Also zen headbut generates slightly less energy than pound on offense, but due to the way quick attacks work with gym AI I'm 99% certain that zen headbutt generates significantly more energy than pound on defense
Apart from that, I believe energy gain for defenders doesn't matter. ESPECIALLY for Blissey. A level 30 Blissey with 10/10/10 IVs placed in a gym will have 760 hp (380 doubled). Before it faints, it will generate 380 energy just by taking damage! The energy it will generate from attacking is certainly less than that. My point is, quick attacks aren't the main source of energy for defenders, so we shouldn't care about their EPS that much
Also, the dps you were looking at was for an attacking Pokemon. DPS for a defending Pokemon works differently. The defensive dps of pound is 2.69, and zen headbutt is 3.87. You can find these figures when you click on the individual moves at this website. Defensive dps is much lower because of the low frequency at which the AI attacks.
You are wrong people, every updated site says that best defending moveset isPound and Dazzling Gleam is the best moveset, for DPS even for EPS, AI attacks faster now. https://pokeassistant.com/battlesimulator?locale=en try to enter here Blissey as defender with Pound and Zen and test it. Check this one too click on best defenders https://www.reddit.com/r/TheSilphRoad/comments/5vhlqp/updated_rankings_of_attackers_defenders_and/ check here Energy Per Second and DPS updated https://pokemongo.gamepress.gg/quick-moves
