Hi Clément,
I have some photo's to compare these 2 cultivars.

Abies fraseri 'Palmeri'

Till now it does have a nest forming habit, which is differend then 'Raul's Dwarf'.

Abies fraseri 'Raul's Dwarf' aka 'Rauls and Raul's W.B.'

This one makes a leader and will grow into a little tree.

A very simular cultivar to 'Raul's Dwarf' is 'Rawls' in which I think is the same plant, speaking these names sounds the same.
Abies fraseri 'Rawls'

Clément, did you get any wiser after you did see these photo's?

Coniferjoy,
Thank you,but I hoped more comments from american members and maybe some photos with mature or aged plants.
Clément

Clément,
It seems that nobody else but us do have these plants...

Can you show us yours?

My "Palmeri"

Abies fraseri "Palmeri"

And my Raul's

Abies fraseri "Raul's"

Clément

Clément,

The differences between these are that the 'Palmeri' do have a nest shape habbit without a leader and that the 'Raul's Dwarf' will grow into a litte tree with a leader.