I think we can only see the avatar, the profile picture doesn't show when viewing your profile on playstation.com. I will check if I can see it on PS4, I think it may only be visible if you have the user added a friend however.
Ah, yeah, when I view your profile on PS4 I only see the Sly avatar.
I think the profile pic is only shown if you have the user added as a friend or are logged in as the account holder. That's why it's not viewable to our scanners. So no way to pick this up unfortunately, but maybe I can add an option to upload a custom avatar for each service.