Ah yes, Solo. A good keeper. But a diva. It takes a certain mindset to carry a team as a keeper. She's never really been asked to do that, except for 2 PK shootouts in the recent WWC, one of which we lost. Indeed, Japan's keeper made TWO saves, and arguably outplayed her.
That said, I think you can win a World Cup with her.
I will say though, it's hard for me to get past the incident where (rightly or wrongly) she was benched, and then pretty harshly criticized Brianna Scurry.
I also think that she is (at least somewhat) a product of an appearance-driven, backstory-driven publicity machine.
LEAD the team. THEN become the media darling.
By that, I mean, step up. As good as she is, Wambach actually stepped up IN THE CLUTCH. Morgan blossomed on-stage. Rapinoe stepped up.
Solo saved a (mediocre) shootout/PK attempt vs. Brazil -- full credit for the situation.
But I'd also argue that she didn't really help settle her defenders vs. Sweden and Japan.