New Cures taper a lot more drastically below the knees compared to Petit Standards. There are probably more differences, but that's the main one.
Uhm, no. You are 100% wrong. New Cures taper from the knee down but have a "flare" at the leg opening and actually have a bigger leg opening then the PS which have a big taper from the knee all the way down.
New Cure Tagged size 28
Leg Opening: 7
Petite Standard Tagged size 28
Leg Opening: 6.75
Check out the chart on ContextClothing.com