Everyone here is missing the point, this is not exactly meant for direct ports of iOS applications to Mac OS X. For example, look at Twitter for Mac and Twitter

Everyone here is missing the point, this is not exactly meant for direct ports of iOS applications to Mac OS X. For example, look at Twitter for Mac and Twitterific in the Mac App Store, they aren't direct / touch-based ports, but rather, they take cues from their iOS counterparts.