What did the turnovers on defense tell you?
And what the graph was suppose to show you is that since 2018 the Jets and Buffalo Bills are the teams benefiting the most from their return units.
Turnover Differential By Year (Dallas vs. Buffalo)
2020: Buffalo +4 (26 takeaways) Dallas -3 (23 takeaways)
2019: Buffalo +4 (23 takeaways) Dallas -1 (17 takeaways)
2018: Buffalo -5 (27 takeaways) Dallas +3 (20 takeaways)
2017: Buffalo +9 (25 takeaways) Dallas -1 (21 takeaways)
2016: Buffalo +6 (18 takeaways) Dallas +5 (20 takeaways)
So what this tells me is that from 2016-2020 (Dak's rookie year was 2016 whereas Allen's rookie year was 2018) the Buffalo Bills have averaged 23.8 defensive takeaways and a +/- turnover differential of +3.6. Meanwhile, during the same time period the Dallas Cowboys have averaged 20.2 defensive takeaways and a +/- turnover differential of +.6%
So, while there is a slight difference in terms of average defensive turnovers, there is an equal difference in terms of average amount of offensive turnovers......leading one to see that Buffalo's offense does not turn the ball over as much as the Dallas offense has been doing on average while the Buffalo defense has done a better job at forcing turnovers than the Dallas defense.