Penn told us straight out at an info session on campus “If you are a legacy and Penn is your first choice, apply ED. Otherwise, legacy will not be considered”. I don’t know if the policy has changed but they were pretty candid about it.
For sure that skews Penn’s ED stats. I would not be reading the tea leaves on this one. Bottom line- Penn and JHU- hard to get accepted. Take your shot for sure, but spend the summer falling in love somewhere else.