Well, you could also tell him the differences between the PS3 controller and the Xbox 360 controller.
The PS3 controller (DualShock 3) has rumble AND the Sixaxis function, while the Xbox 360 controller only has rumble.
The PS3 controller has a built in battery that lasts around 35 hours and when the battery is about to be empty, you just connect it via usb to the PS3 and keep playing while it's charging, while the Xbox 360 controller doesn't have a built in battery, which means you will have to buy your own batteries (like the ones used in remote controllers) and you will also need to buy rechargeable ones and a battery charger... and when the batteries are about to be empty, you have to go and look for more batteries that have to be charged (so you must always remember to leave some batteries charging), get the batteries, open the controller, take out the empty batteries, place the charged batteries in the controller, close the controller again and keep playing.
The PS3 controller is connected to the PS3 via bluetooth.
The PS3 has built-in bluetooth. You need a bluetooth adapter for the Xbox 360
With the PS3, you can use almost any bluetooth headset you have, it doesn't need to be a Sony headset, while on the Xbox 360, you need to buy Xbox 360 headsets.
You can put any HDD inside the PS3, while on the Xbox 360, you need to buy HDDs that were made specifically for it.
When you move the PS3 with a disc inside, the disc will be fine, just like the PS1, PS2 or Wii, nothing happens. But When you move the Xbox 360 with a disc inside, it scratches it. So he has to be careful and put his console where nobody can move it by mistake and always remember to take out the discs if he, for whatever reason, needs to move the console.
The Blu-Ray storage capacity allows games to include extra stuff, uncompressed audio that, in conjunction with a nice home theater, has better sound quality than compressed audio... and it also allows for less compressed video (like CGI cutscenes) which means those cutscenes will look better and have less artifacts than if they were more compressed, which results in a better experience.
And also, tell him that if his current Xbox 360 is gathering dust, when he buys the slim, only the design changes and it has built-in Wi-Fi... and is also "Kinect Ready" :P. But the games and every function it had will still be the same as his old Xbox 360, so he will probably not use that one either... and he would have "wasted" his money if he doesn't even use it :S
Those are some of the points I think you missed, there may be more, but I don't remember right now.









