And how old is that story? More than a year, this is really old news. Right now (and it has been like this for about a year), Apple Software Update on Windows does offer you Safari but with an unchecked box whereas updates to installed Apple software, eg, iTunes, have their box checked and you only have to hit enter. To install Safari you also have to check a checkbox.This is false, I've never installed Safari but just having iTunes/QuickTime will cause it to check for updates and it tries to install Safari by default there. It's quite annoying. I'm sure many Windows iTunes users didn't care and just let it install Safari even though they may never use it. And since they had Safari it then upgraded them.
Apple is definitely doing some shady stuff to boost their numbers here.
Here's a complaint about it: http://slashdot.org/story/08/03/22/1536250/Mozilla-CEO-Objects-To-Safari-Auto-Install?art_pos=8
Yes, initially when Safari for Windows appeared for the first time, that box was checked. But after large protests Apple changed that with a few months.