You do have your point, but consider situation like the following:
Blissey:Both Deoxys-S comes in, Blissey hit it with Seismic toss or Softbroiled, not a status (which cripple both set). Now Blissey softbroiled as you hit it with Superpower, your attack doing less and less and it status you. On the other hand my Deoxy-S taunt it and shut it down completely and recover off Seismic toss
Forretress: HP fire is not listed as an main option on the 4 Atk analysis, and thunderbolt does 41% - 48.3% to a 252hp/80Sdef Forretress. So if you come in and try to thunderbolt it, it will set up 2 more layers before you kill it. Meanwhile I can taunt it and recover stall Gyro ball thanks to Pressure (it only has 4 hit even it does 67.2% - 79.7%)
You are true about Skarmory, Tentacruel and Hippowdon.
But after I saw your reply I also ask myself the following questions: What can counter/give trouble to the 4 Atk Life Orb Deoxys-S? And I have the following:
Dusclops: I can certainly Taunt and shut it down
Bronzong: I can recover stall out Gyro ball like Forrestress
Latias: Well, I cannot beat this, but as least I am not a calm mind set up Bait on her thanks to Taunt
Porygon2: Superpower does less than 50% and only getting weaker, while I can taunt stall it like Dusclops since thunderbolt does 37.3% - 44.4%
Jellicent: I am not sure how much a life Orb thunderbolt does to it since I don't know any damage calculator for new pokemon. But my guess is Life Orb thunderbolt fail to 2HKO, while my set can taunt and beat it similar to Porygon2, as long as I am using boltbeam.
Reuniclus: The standard calm mind set don't carry shadow ball and I resist both Focus Blast and Psychic, but if you lack taunt it uses you as set up bait instead. My set can taunt it, prevent it to set up and recover, and I defeat it slowly.
Sigilyph: After a cosmic power, the 4 Atk set fail to stop it, while my set can shut it down.
Wobbuffet: it revenge the 4 Atk set, while I can taunt and shut it down.
Deoxys-D: Taunt+Recover shut this down also
Wilson 46, I would find log to pursue you the set, please give me at least a week before you decide to reject this. I also appreciate if you try this on your own and get surprised by it, thanks!
There's just one problem with these "situations". The way I see it, you assume that your opponent is dumb enough to stay in and play along with your plan. Sadly, while in a few cases this is true, most people will switch out and put you in a checkmate position. Tyranitar will if you lack a Fighting type move and Scizor will if no Fire is present. How will they do so? Pursuit.
If you switch, you're dead. If not, you take a hefty amount of damage. This is also a reason why Aerodactyl is preferred for this role. So please take note of this if you still insist with this.
I hope I don't get ninja'd...






















