Safari? No thanks
Just tried it. No, it's not faster than FireFox. If anything, Firefox is twice as fast. And not only that, Safari doesn't give anywhere near the choices and flexibility FireFox does - and that's not even looking at all the extensions that are so easy to get for FireFox.
Downloads: in Firefox, you can choose to either have them downloaded automatically to your folder of choice, OR you can choose to have it ask you every time you download a new file. That's always been my preference - I want to put it where I want it when I download it, not have to go browse to some arbitrary downloads folder and then move it where I actually want it. In Safari, you just get to choose which folder is your downloads folder. No thanks.
Tab bar: In FireFox you can choose to have your tab bar shown all the time, or hidden when you don't have more than one tab open. No such option in Safari. No thanks.
And there's many more such things. Unfortunately for you Mr. Jobs, if I really wanted a browser that dumbed-down I'd just use IE7 and done with it. But I want a browser that lets me choose what I want, not stick me with what some clueless moron in a suit thinks I want. No thanks.