Well, count me as another one too out of the culture to know who these people were, but now, upon research, the Syndey Bristow character (Jennifer Garner) has at least 3 lbs of well-placed muscle on her body, which is 3 lbs more than the other two young ladies. Cutest one, too, if that's what you are asking.
Not that familiar with the Sydey Bristow character (but am not a big Jen Garner fan), but I'll Ziva in hand-to-hand combat and Fiona in anything that has to do with weaponry and bombs.
Ziva, in a landslide! Fiona has turned anorexic and has had too many lip injections. I didn't even recognize her from an old movie she did with Michael J. Fox. Yuck. Nothing is grosser than cute people overdoing the plastic surgery. Are you listening Meg Ryan? Why is it that these stars, with so much money, seem to get the worst, most obvious plastic surgery?