Seems to me that LY to/from NYC is indeed going down from 85-100k to 70k in J (35k in Y, 45k premium).
Although it says "starting at", in the T&C they clarify:
"Miles shown reflect starting at prices and are for informational purposes only. Itineraries including multiple segments and/or access to additional inventory may price at higher levels."
Is this too good to be true?