I have to disagree with the original poster
Sony has a huge fan base and when kenny k says he will sell 5 mill units, with out any games for the system sadly he's right
plus sony has huge franchises: MGS, Final Fantasy, Gran turismo, to name a few, guaranteed million sellers when they drop.
couple that with the fact that while it may not be anyone around here, there will be people out there buying the system for the blu ray player
problem with your comparison is you are comparing PS3 with systems no one bought(or hardly anyone - DC fanboy)
PS3 will sell out launch day and for months after that. you will see them in rich football players houses on CRIBS and put into wack ass cars in pimp my ride. if it turns out to be garbage or not, it will still be a status symbol.
bottom line a lot of people will buy it and they will buy games for it
will it beat out the 360

thats a better question