Well, i got my NS Legacy now, and will be comparing to this board.
Dones is stiffer then NS.
I was told that my donek was made for 190 lbs, i'm 220-230. But: donek always on a stiffer side. Many people say this, so as you. And Incline was made for allmountain carving, and i'd use it for powder, no need in super stiff.
Narrow profile? Mine is 28cm waist =) It's wider and longer then Legacy. And i got almost no problems in pow.
Anyway, i'd check out this in a couple of weeks and then decide.
If it has a 28 cm waist that is a Donek Sasquatch, not the Incline (my Incline 155 had a 24.1 cm waist... the "Donek Wide" model has a 26 cm waist). Just like your Legacy is the Wide version of my Never Summer SL. I am surprised you got a Legacy instead of a Heritage X.
A board that is made for someone 40 lbs lighter is obviously going to be much less stiff (imagine me riding a board made for someone 110 lbs)