Although I’m a warlock main I can’t say much about pvp since the only time I really play it is when I’m using rain of fire and vex or blink, but from what I can tell blink is the main thing about warlock in pvp. It’s got good mobility, and if you use it well you can avoid gunfights altogether and blink out of supers (did it a few times with a thundercrash and a nova bomb cataclysm but don’t have clips for it.) Arc lock has arc souls which combined with NTTE can make for a nasty build and solar warlock has air dodge which is like hunter dodge. Respectfully, you just have to adapt and know warlock’s potential more.