You are mixing survivability tools with being more powerful, and those are not the same thing. Arbites having ways to avoid dying does not automatically make it stronger than Veteran or Zealot. It simply means it has more safety built into the kit.
To be clear, I do not disagree with you that Arbites is safer to play. But safety alone does not define overall power.
If a player presses a button and feels like they are contributing more than they actually are, that is a perception issue, not evidence that the class is outperforming the others. Veteran, Ogryn, and Psyker contribute far more in damage when played well. Arbites simply gives players more room for mistakes. And if you can delete ten Crushers before they ever become a problem, then you do not need to survive them in the first place.
I was talking about Havoc in the first place. After you shifted the discussion to Auric, I rephrased my points so we were speaking about the same difficulty. So you need to read those earlier comments from the perspective that I was discussing Havoc. If you play Havoc right now, it is almost entirely dominated by the most broken builds in the game.
I specifically adjusted my wording once you moved the conversation to Auric, and I even asked you to give examples of what you consider broken so we could discuss it clearly. I am not defending exploits. I am explaining the environment the class was being judged in. So again, I am asking you what you consider broken and what not so we can discuss it properly.