Being #1 on the list doesn't actually guarantee you a PS3 on launch day. That just means you'll get one. If everything happens like the 360, be prepared for a long night outside to make sure you get your preorder or else some other guy with a preorder will get there first.
And to WOWChamp, my local Target got 14 360 consoles, not 3, with M$ launching 300,000 consoles. So 1million for the U.S. will probably get 20 each at most.
More than 3 PS3's for sure. Retailers like Gamestop and EB are estimating at least 20 per store. My local Target got 14 360's on launch day with 300,000 consoles being released. So 1million PS3's will get everyone basically a PS3 if they plan their purchase correctly.
Don't trust preorders at EB or Gamestop, because you might not get a PS3 and they most likely come in bundles. That's $600+