I believe so. It is funny in a way, and I could go on and say to all the Apple fans / Steve Jobs worshipers - "in your face suckers!" (Security flaw hits Safari (Windows) only hours after release).
But I'm not going to say anything or do anything of that sort, there's no reason for me to! Because I (and I'm not the only one who) believe that there is a direct relation between the popularity of a software and the number of security vulnerabilities that are discovered for that piece of software. May be it has to do with increased surface area to attack/defend considering which side you are or even a standing spectator. And if you are a spectator it would serve you best if you are informed!
I was actually quite excited to download Safari for Windows, as the majority of the clients I deal with are photographers or in the photo publication industry (and they have the pre-conceived notion that Macs are better suited for working with photos) I am for once happy, no more running between my desk to the lone Mac in the boss' cabin while working on a fix or during deployment/testing. Maybe someone (read Raj Shekhar) will disagree and will probably cite some Open Source app (FreeBSD perhaps) and perhaps he or anyone else would probably be right in that context. But so am I.