Are the neck dimensions the same on the JP13, JP15 and Majesty 7 Strings?

[brandnewcolony]

Question for all my JP aficionados.

Obviously the woods are difference and the radius should be the same 17 degrees.

Are the Neck dimensions the same as well? Like the width at the nut?
I swear my new JP13 feels smaller width wise at the first fret than my Majesty 7 I just sold.

All the best