I also feel like Ninja is very weak at PVP. Why, you ask? Simply because what made Ninja good in PVE does not (and I mean at all) apply to PVP. Yes, you guessed it. I'm talking about your utility. Most of it, if not all of it, is to some extent pointless. Shadewalker and Smokescreen are self-explanatory. The uses of Goad are so limited and situational (e.g if you have a bard on your teaming multi-DOT'ing, and even then it's still a big question mark). As for Trick Attack, I feel like it's very useful IF, and only if, you can land the positional. Moreover, it's not just your utility. The fact that you have to press multiple buttons just to get off some of your most useful skills (talking about mudras and Hyoton as an example for PVP) sets it one step behind other melee classes in fast-pace matches like the Feast (also considering how easy it is to stop you in your tracks mid-weave and how very unfortunate it is when that actually does happen).