Hi Al, I'm not defending Politifacts, but honestly, when a publication puts things in quotes and cites sources, their alleged political leanings don't matter. People have said the same thing about Snopes and I just laugh. I mean if Snopes says 1+1=2, do you dismiss it as false because they a "left leaning" ?
The difference in the two assessments is the age range used to assess them. Sanders very clearly said ages 17 - 20. Trump simply said "youth" which covers ages 16 -24.
I also suspect these assessments were done by different people. And I bet if this discrepancy were pointed out to Politifacts, they would do something about it.
Chris