FFS.
These discussions about if you can buy a Wifi adapter for the X360 for $50 or for $10 are not only very boring and pointless but they are also completely irrelevant for the topic of this thread.
Well those points were brought up because every time it is mentioned initially that for a Hidef PS3, you need to spend $79 on an HDMI able, people point to "Monoprice $8".
so Yea, if we start from there, (Retail official add-ons as you suggest) and add to the fact that MORE people are going to NEED to connect to a Hidef TV than will NEED a wireless solution or HDD then you are correct, there really is no argument here.
X360 is CHEAPER in most every regard and the Price point for Sony is hurting them (point of thread)