I sent an email but thought I'd post as well...
Using Huddle Performance, I was looking to determine which Team D has the best FF playoff schedule (week 14-16).
Well, it spits back Philly as the top D for those weeks. They play NYG, SF, and DEN. The stats under each of those teams are what those teams' respective Team Ds gain, not what they allow. NYG = 8.0, SF = 9.4, and DEN = 9.5
So there seems to be 2 problems... one, the tool isn't computing the matchups correctly (bad matchups are good, good matchups are bad). And two, the tool is using what the Team Ds gain and not what the teams allow to opposing Team Ds.