What size boots are you again?
Vario700 vs Vario745 seems like a decent difference in sidecut to me. I don't quite know how vario-grip changes what a sidecut feels like, but back in the day of circular sidecuts (everything now a days is progressive/parabolic/multi-radii sidecuts) a 50 cm difference in SCR was noticeable.
Typically a women's board is just a men's board with narrower waist (since women have smaller feet) and less stiffness (since women tend to have less lean muscle mass). Check out Venture Snowboard's philosophy
on gender-specific boards.