The PPC does not operate in a world of logic and sense, where the better equipped you are, the greater the odds of winning. They live in a world of Narrative, where tropes are more then observations, and what makes a good story trumps all else. Were agents to be armed to the teeth, wearing invulnerable armor, with weapons that could not break and overpower any armor, then the PPC would crumble in moments. Why? Because then Agents would be trying to be on a level playing field with Sues. And that will never happen. They bend the world to their whim. When faced with great adversaries, they always win, to make them seem more bad ass. Agents are no longer assassins, they are milestones.
So, how do we combat this? With Plot Armor, and underdog stories. The worse off it is for agents, the more endearing it is to the Narrative. The worse odds they have, the greater chance they stand. Of course, you can't walk in with absolutely nothing. That's not an underdog story, that's a suicide mission. So, we give Agents barely-working tech, that does still make their jobs much easier. We give them weapons, but only the most generic ones possible. And, best of all; we send those with wit. Agents might not be the most intelligent, or crafty, but they are all witty. They can bend Narrative in their favor, they can take advantage of their foes logical gaps to create their ultimate downfall. They can through the most painful puns.
In the end, a story of men facing gods and coming on top, is a much better narrative then unstoppable forces mowing down everything in their path. And that is not just meta commentary. It is in-universe law.
