It also pretty much refutes the idea that Argent and the Wrecking Crew are Mary Sues. Mostly due to the fact that it's only the Crew, as a whole, that has the skill set they need. Even Ryan Mercury, supa-bad-@$$ that he is, is only exceptional in his specific role. That of infiltration/CQB. He isn't sniping folks from 1000 yards, he isn't fireballing them to death, and he isn't a multi-millionaire by virtue of his financial acumen (the big D gave him that stuff).
The team as a whole should be incredible. They are highly trained professionals who each excel at their specific role. Together, they make up an incredible, hard-hitting team. That does not, however, mean that they are individual, over-the-top, unstoppable MS uber-characters.