It’s because they have high damage and EXCELLENT mobility and disengage tools. This is the type of feedback that leads them to slowly homegenize jobs. Let jobs have different strengths and weaknesses instead of being like “X job can do this so they have to make Y job do that too!!”

Let Viper be a job where you focus solely on fast-paced DPS and moving around the arena. If you have to weave in defensive they will use that as an excuse to reduce the APM