Will that mean the end of the Xbox360?

I think so, because if that's the case, then, it's just not the price drop that is selling the PS3, it's that people want it, and the games coming out in the fall.

http://www.ukrebellion.com/

Problems with development of GTA IV on the Xbox 360 has meant the game has been delayed until April 2008.

GTA IV was due for release on 17th October. Rockstar have been using the Playstation 3 as the lead platform. An Xbox 360 team have been working besides the core team adapting code. Whilst the PS3 Blu-ray disc will easily accommodate the game, there have been problems fitting the game on to a single 360 DVD disc. Microsoft will not allow the game to be released on 2 disc as they are concerned the 360 will be compared unfavourably to the PS3. The situation has led to tension between Dan Houser and the Microsoft Empire as there is currently no way the game can fit on a single dvd.
Microsoft are currently working on a new compression technology for DVD9 discs, however this wont be available until next year. In a politically worded statement Sam Houser said "The game is huge and is pushing the hardware platforms to their absolute limits. The top engineers from Sony and Microsoft are working closely with the team in Edinburgh right now, helping us to fully leverage the power of both platforms."

Whilst the PlayStation 3 version is all set for completion at the end of this month, Microsoft have tied Take Two into an iron-clad legal agreement that forbids them from releasing the game on any format unless the Xbox 360 is ready. This has meant that whilst the PS3 version will be ready for October, Microsoft have directly prevented its release.

Oviously RSX is more powerful.

That's why first gen PS3 games look way better than second gen Xbox360 games.

And Rockstar is choosing PS3 to make their next big franchise because the Xbox360's GPU is not powerful enough to handle their next gen vision.

Obviously the PS3 is the more powerful system. That's why 1st gen PS3 games look way better than 2nd gen Xbox360 games.

And Rockstar is making their next big franchise on PS3, meaning Xbox360 is not powerful enough to handle their next gen vision.