Which is more important for a pokemon, HP or Def and Sp. Def?

>>29146599

Depends on its use.
Look at your pic related. No special attacker can ever kill this thing but it dies to a quick attack.

It depends. HP and defenses both have diminishing returns. There's a reason why Cresselia is bulkier than Shuckle and Wailord.

File: 1475313200215.jpg (49KB, 728x546px) Image search: [Google]

49KB, 728x546px

>>29146667
>No special attacker can ever kill this thing
mega dog

>>29146599
Balance between HP and at least one type of defense

>>29146679
Is it because it has a recovery move that's not rest?

>>29146667
lies, psyshock

>>29146667
Well no shit, it can hold an eviolite

>>29146599
You should never split defenses (Put less than full in both defences), unless you really know what you are doing, and are trying to hit specific survivability benchmarks. Don't put 80 in both, just put 160 in HP. With that said, point for point you do get slightly more bang for your point buck by investing in defense, provided that that point gets used.

If you are using a Pokemon with a draining move, absolutely prioritize defense. If a Pokemon will be passing Wishes, absolutely prioritize HP.
If you are putting stats on an attacker, I like to prioritize HP, since there is no telling what they might get hit by. If you have a dedicated tank, put the stats on the defence you expect them to use.
Some Pokemon, like Chansey, get so much out of full EV investment in their off defense that it is a crime not to. That said, don't run Bold Chansey. You only get a pittance of defense for that.

In general:
Bulky offence: Full HP (Conkeldur, ectetera)
Tank: Full on one defense
Wall: Full on HP and one Defence
Pain Split/Drain move user: No HP investment. Defenses only.
Wish Passer: Full HP
Chansey/Blissey: Full Defense and HP, Calm.
Assault Vest: Full Sp. Def. You get a buy two get one free deal, so use it.
In most cases, make sure your HP is odd. It may not seem like it matters, but you'd be surprised how much it comes up. If you are relying on something like Belly Drum+Sub to activate a Berry or something, stay even.

If you need to run a -defense nature because you are running a mixed sweeper, in general go with the lower stat, to minimize your losses. Do keep in mind that most priority is physical.

>>29146728
>252 SpA Mega Alakazam Psyshock vs. 4 HP / 252+ Def Eviolite Chansey: 217-256 (33.8 - 39.8%) -- guaranteed 3HKO
Before you shitpost about calm mind keep in mind this egg can thunder wave and cripple it way too hard for it to sweep.

Ideally you'd have your total Def and SpD points equal to each other and half of total HP for a mixed wall, and equal to HP for one of the defenses and half for the other for a dedicated physical/special wall. I've already forgotten the equations and it's also modified by how much EV investment and in what you can take, but in all cases base HP needs to be higher to make the most optimal use of your bulk BST. The more offensive a Pokemon is, the higher the difference needs to be.

>Pokemon with high defenses but low HP
>Pokenon with high Hp but low defenses
Every time