Yes, that's exactly it. To be human means to possess the necessary attributes that without which a being would no longer be human. Since it appears that we agree that only humans are savable then all humans are potentially savable because they possess the necessary attributes.
Well, then you get in that little sticky point about your theology that the non-elect, while admittedly human, are not potentially savable.
They were doomed from the get go.
Thanks for playing.