Ah, you are correct sir! Pulling apart the commands the first noticable thing is that 'strings' is now part of the developer tools in 10.9 and not part of the standard install so you have to install that when prompted and the other is that the one-liner script is really expcting one server and it appears there are two server, the regular one and one for seeds (at least on my system).
But even after doing all that it appears that Safari 7 (right now at least) is rolled into Mavericks and not a seperate download, I only found Safari 6 packages. So it seems if you want to reinstall Safari you have to download Mavericks from the App Store and reinstall the whole OS too!? Granted OS reinstalls are very good now, they don't trash any settings, but still seems like a crazy waste of bandwidth when you only want a package for Safari and have to download an OS!