Guild Wars 2

Hey guys, I have been playing thief basically since launch and I have read many of the guides for thieves and many of the builds, yet I still cannot find the balance found in WvW. Many of the WvW thieves can hit around 8k backstabs, and they are still pretty tanky. So I was just wondering what build are many of these thieves using? Currently I am using PVT gear for more toughness and vit but I can’t hit very high, but the thieves I find in WvW can hit very high and can still survive bursts. Any help is appreciated

https://forum-en.gw2archive.eu/forum/professions/thief/Building-a-better-D-D-thief/first