At Level 50, my Eos heals for 1000 on average and I heal for 1500 physicks (300 potency on eos heal, 400 on mine).

At Level 60, the potency remains the same, yet Eos heals for 1200 in current gear and I heal for 2400 physick.

That being said, it scales differently as you level up. I was wondering if making Eos/Selene weaker was intended or not? Hopefully it is a bug tho.