Windows' Poor Battery Life

Windows laptops have always had poor battery life compared to their Mac counterparts. I'd never looked into it in detail, assuming this had more to do with Apple's hardware excellence than anything else, but Jeff Atwood (Coding Horror) argues convincingly that it is both a software problem and worse than I had imagined.

Given that power management is a key component of Mavericks, I suspect this difference is only going to get worse in the near term.