The I-Phone doesn't have a HDMI port.
The PS3 has a memory stick, compact flash, and SD card reader.
Buttons!!!
Free video calls.
Upgradable hard drive
PSP and PS3 Remote Play.
Umm that's all I can think of at the moment.
Bet with Conegamer and AussieGecko that the PS3 will have more exclusives in 2011 than the Wii or 360... or something.