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(The comparison image I found on a design blog called Eithin, which had some interesting analysis that might explain why I like the comic better.)
Of course, this is not Akerman's fault: superheroines are always sexier in print than on the screen. I'll grant a couple of exceptions, then prove the rule.
Mystique:
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Played by Rebecca Romijin-Stamos, she's a lot sexier than comic-book and animated versions.
Wonder Woman:
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Invisible Girl/Woman:
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I haven't yet gotten up the stomach to watch the Fantastic Four movies, but I'm willing to grant that Jessica Alba can do a sexier portrayal of the housewifely Sue Storm.
But most of the time it goes the other way:
Rogue:
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Storm:
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Storm, like many of the X-Men has undergone some drastic changes over her 40+ years of existence in the Marvel universe. In changing her to real life, not only did Storm lose one of her enduring features (great tits), but she became a much flatter character. We know Halle Berry can act (see Monster's Ball and a surprisingly good job in Swordfish), but we also know she will let herself totally phone it in and go through the motions to collect a paycheck (Catwoman). Over the course of the X-Men movies, she became less and less of the former and more and more of the latter.
Jean Grey:
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All this to say, Jean Grey was sexy in the cartoon. Smart, strong, independent but emotionally vulnerable, and with great tits she was a joy to watch, despite the limited quality of the animation. And then she became the Phoenix. Throw me into that fire.
Famke Janssen seems like a good choice to play her. She's got a good bod, some acting experience, and she understands the role, as shown by the quote on her Chickipedia page: "We've always been ready for female superheros. Because women want to be them and men want to do them." Perfect. But she does a moderate turn at best as Jean Grey. Costuming is partly to blame, again, when instead of using her awesome Phoenix alter-ego, they just put her in a trench coat much of the time.
And I could mention others like Electra, Batgirl, Batman she-villains Catwoman and Poison Ivy, even Aeon Flux.
Do I have an argument here? Yes, and here it is: superheroines are always sexier in comics because:
3) Their clothes are unreal--what fabric can cling like that & still not bunch, bulge, or tear?
2) They're unreal--we know you can't have those tits & that body, but a man can dream, can't he?
1) They're deeper--comics don't spend a lot of time developing character, but you throw a crumb out here and there over the course of decades & it adds up to something. Actresses rarely inhabit the roles, they just go through the motions, and nothing is less sexy than just going through the motions, which is Malin Akerman's chief sin.