How are you still not getting this? With a PC you have a full 12"- display, at least 1600x900 pixels, you have a real full keyboard, a mouse with 3 (sometimes more) buttons. You also have a lot more processing power. Most PC's are at least quad core 2GHz+ with much more and much faster RAM. When you compare that to the new iPhone 5 with 640 x 1136 4" display, dual core 1.3GHz [ARM] processor, and 1GB of ram. You can't seriously think that it will perform the same way a PC does, and even if it did - the form factor does not lend it's self to the "web browser" format. I don't think anyone will claim it is easier to go on the full Facebook website on any mobile device than to use a properly made client. There is also Atomic Web Browser for iOS which is neat.