The Key in PvP is to having the right feat build.
To help you acheive this (and so you can share your builds with others) here are some useful links to guides and feat calculators.
Any additions you would like to see, just post in this thread and I'll add them.

Conan Guide Sites:

• Conan English EU Forums [Offical Site]
  
• Ten Ton Hammer
  
• MMORPG Edge
  
  

Feat Calculators:

• Age of Conan Amoury [Offical Site]
  
• Goonheim.Conan Feats
  
• Conan Kave
  
• Ten Ton Hammer
  

This is also a good one.

AoC Wiki