ED2 vs RD

For schools that offer ED2, the deadline for it and RD are usually the same.
How much of an advantage is ED2 really?
Are they viewed as one pile or separate?
Anyone have any insights?

Where are u planning on applying ED2? It depends the school.

@milousmom How about to American University?

American University values its ED pool a LOT, so it would be a significant difference there.

@sumuzu Thank you!