Pros/Cons of both Rock Head and Strong Jaw Tyrantrum?

Question

Question says it all :)

Answer 1

Strong Jaws

Pros:

• Powers up Elemental Fangs and Crunch to considerable level power, making these viable as coverage moves while dealing very decent damage albeit non-STAB.
• Easier to obtain as it's Tyrantrum's usual ability.
• Superior to Rock Head in terms of overall utility, boosting many moves rather than focusing on one.

Cons:

• Makes the use of Head Smash too risky and forcing Tyrantrum not to run its strongest attack just to avoid tough recoil

Rock Head

Pros:

• Allows Tyrantrum to recklessly spam his strongest attack, Head Smash, without caring about recoil
• Doesn't necessarily renders elementary fangs unviable
• Head Smash Relicanth is awesome. Head Smash Tyrantrum is even more.

Cons:

• Harder to get, albeit far greater than Strong Jaws
• Inferior to Strong Jaws as of overall utility, focusing on only Head Smash

TL;DR

Rock Head all the way. You can use a scarved Head Smash set to abuse immediate power this dude, or Dragon Dance set with Lum Berry to avoid an ailment, get fast and powerful and hit like a truck, almost carelessly; turning Tyrantrum in what could possibly be one of the scariest win conditions to face.

Comments

Choice Scarf:
Tyrantrum @ Choice Scarf
Ability: Rock Head
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Head Smash
- Earthquake
- Ice Fang
- Fire Fang

LumDD:

Tyrantrum @ Life Orb
Ability: Rock Head
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Dragon Dance
- Head Smash
- Earthquake
- Ice Fang

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btw, Tyrantrum doesn't need any Dragon-type STAB as these don't give enough power to target anything in particular, barring Outrage which however may be very risky and better left to Pokemon like Garchomp.