ColdWraith link or Wrathful belt

Hi, I am trying to understand gearing for Arms warrior pvp.

I see that on top ranking some warrior use coldwraith link and some use wrathful belt.

now my understanding is that as warrior you want to use highest ilevel PVE gear and gemming resilience to achieve an higher overall stats. What is the reason of many high rank warrior using the wrathful belt then?

Thanks,

You can either gem resil and get pve ArP gear or get PvP gear and gem ArP. If you raid, get pve offsets and gem resil. If you dont care to raid, gem ArP. Either way, the end stats will be roughly the same and it really is a matter of preference and ease of acquiring the gear.

they use both, based on the enemy comp they face.

By default they use PvE belt with resi gem > when they need more resi they equip PvP belt