Figure this out step by step.
PA is a hero with only physical damage and about destroying people with low armour
Jugg is an agi hero and builds such so he has high armour
PA enjoys bursting people, she hates taking long fights
Jugg has a ward that can heal everyone with heart like healing in an aoe, thus he can take longer fights than most carries
PA has poor strength gain, she needs a bkb to stop being bursted by stuns and magic damage
Jugg enjoys buying basher and maelstrom
If built and played correctly jugg trumps pa.