1) The best test is the most recent season. My opponent's 2004 stat is fair, but it proves volatility, not that nobody sits on top. If no team has sustained control, "right now" has to mean who holds the belt today. That's Philadelphia: latest division title, deepest playoff run, and the team the rest has to solve head-to-head.
2) Roster and coaching keep their floor highest. The other side's turnover point is real, but it cuts their way less than they think: if nobody sustains control, recent results are the only reliable ruler, and those point to the Eagles.