Performance is never sacrificed to achieve a women's fit.
A Dama model doesn't have a shorter top tube and longer chain stays to address fit issues. It doesn't utilize materials of different stiffness or weight. No tube lengths, angles, or proportions have been changed to accommodate fit differences between men and women.
Each Bianchi model - standard or Dama - features size specific geometry.
Each tube length and angle have been optimized to deliver the same defined performance attributes regardless of size. A 44cm will react the same way for a shorter rider as the 61cm does for a taller one - regardless of the rider's gender.