22.4是总容量，请看仔细了再翻译。
实际22.4*0.6 = 13.44
原文里说了如果算一下，去掉这些多国资料，一张D9还是放不下

"Right now we're compressing and working on the final build, but yesterday we can say we're at 22.4 gigs. And even with taking out the padding and localization, you wouldn't be able to fit the game on a DVD-9. We have 15 languages on the disc, which saves a lot of production money for Sony. About 40 percent of that is localization. Of course, if you the math, we still wouldn't be able to fit the gameon a DVD-9."