Oh for god's sake. PS3 is not THAT supply constrained. Anyone who really wants a PS3 can get one. In other words, it's doubtful that it's hindering PS3 sales a significant amount. And if you're gonna use the excuse of it being out of stock in some stores, so is the Wii. 
PS3 stock may be hard to come by in certain locations, but it's not like the in 2006-2008 when you litterally couldn't buy a Wii unless you were willing to pay $200 extra or wait in line at 6 in the morning.
I wonder if people are gonna still be using the shortage excuse for PS3 when it's still selling similar numbers in August..
1. Degree matters; if one is out of stock more often at more retailers (see amazon stock), it'll affect that console's sales to a greater degree.
2. I hope you can see how, if there were shortages from now till August, the shortage "excuse" would not be disproven. Everyone would just be disgusted with Sony. Further, august is months away, and so some natural decline might be offset by more supply...lower or similar sales in August therefore doesn't prove that PS3 couldn't sell 5k more per week now, or whatever.
@Kirby: not sure which group you are calling delusional fanboys, but I think it's beating up a straw man to suggest that PS3 fans believe that without the intermittant hardware shortages, PS3 would be outselling the Wii right now. Few people believe that; I bet some people answering yes in this poll thought the PS3 might outsell Wii for 1 week or something; I bet some other people answering yes weren't PS3 fans... But anyway, if alternatively you mean that denial of PS3 shortages is pure delusion, on the level of the Iraqi general saying that the Americans had been defeated, while US tanks rolled into the city in the background, I agree.
1)Yes, and that one store would probably be Wal-Mart. Also, it doesn't matter if one place is out of stock, so long as one person has it. Consumers are not going to go to Amazon, see it's out, and say "Oh well, I guess I wont have a PS3 then." If they actually want the product, they will go to other stores and buy it. People are not that lazy.
2)Yes, but don't you think it is a little silly to think that there would be a shortage for that long, esspecially when they aren't shipping many PS3s anyway. Seems dumb to think that a large multinational corperation can only send out, like >150k a week when their competitors can do better. Makes you think that the shortage is an excuse, not a real happening.
Also, remember that when Wiis were out of stock, people would wait in lines and calls stores endlessly to get one. People had to go though a lot to get one. I have seen no lines in front of Best Buy to get PS3s. I hear no calls to get a PS3. So where is this mad shortage? Also, the only source we have on a PS3 shortage is Gamestop said they were out of stock for Q1. It is now Q2, going on 3.