Since 2001 Payton has not
It takes two to tango when you're talking about turnover margins, this is a misleading statistic. Turnover differential includes giveaways by the offense as well as takeaways by the defense.
What were his giveaways during these seasons? This might mean something since he was either a QB coach or an Offensive Coordinator.
If we're even going to begin to hang the TO problem on him, which is flawed logic.