Superman and Lois Lane
Now, for a purely masochistical manifestation of a "male power-trip", the desire to "protect" one's love - in this case Superman with Lane - is brought into play. And while folks might trumpet the allure of "true love" being the deciding force, I presuppose the notion of the character of Lois Lane, being in need of "protection", simply because she is "charmingly adorable" with a touch of "rescue me, please?" in her doe-eyed silent plea of walled vulnerability. You WANT to be able to want to "save" her, and cuddle her, ya know?
Margo was hardly lovable, and she'd more likely bite your ear off ... Kate was a vacuous, but she might whine until Clark punches himself in is own temple. And while looking at this pic featuring Amy Adams, she looks like she fits the bill, perfectly. I personally had not been convinced since knowing she had this role … but now? .. well, THAT, and I have a thing for "pencil-skirts" … LOL
(Image for the cover of "Total Film" via SlashFilm)