Benchmarks? Show me. Ars Technica has web rendering numbers that showed the Nexus One with Froyo beating the iPhone 4 with iOS4.
Smoother and faster? Nexus One with Froyo is incredibly fast and smooth. I have an iPod Touch 64gb, the equivalent of an iPhone 3GS, and there is no comparison. By the way, the HTC Desire and the Samsung Galaxy S is extremely fluid too, and in my perception, both are even smoother than the Nexus One with Android 2.1. But with Android 2.2, the Nexus One comes out ahead now.
As for the Safari browser. big pile of horsecrap. I've used that browser for two years. You obviously never used the Dolphin Browser HD before. Try it on a Samsung Galaxy S or Nexus One Froyo. It's *that* smooth. Like liquid butter. You can effect pinch zooms with slight touch. The Dolphin HD browser can initiate a nearly infinite kinetic scroll, like more than a dozen pages with one swipe. Note this is not the default browser, but a third party browser that enhances using the core Android webkit. However, this browser is free and it is typical of the innovation found in the Android Market.
Right now I am looking at the settings of the default Android browser on the Sony Ericsson X10. I am also looking the Safari settings on my iPod Touch. How is the Apple menus more appealing? Not only does it has far less settings, it has this "For Nursery kids" look to it, while the Xperia X10 browser, typical of Android browsers, are color and background themed to the phone UI, creating a much more elegant effect. The way the default Android browser handles bookmarks and history, using tabs, is much more elegant, user friendly, and less visually cryptic than Safari.
Safari better HELL NO. No Tab browsing. No Video. No downloads. No social network sharing. Worst of all, its not ANY FASTER than than what you have on Android. Pinch to zoom, scrolling smoothness, all arguable now. This is the Chrome Javascript engine you're dealing with here, and benches put it at least 2x ahead of Safari and Firefox.
Nexus One RF issues. Mostly gone with an early update. Completely gone with Froyo. In fact, the RF is better still. This is in comparison with all generations of iPhone which never fixed the RF issues after four generations and years and countless updates. Heck, even now the iPhone 4 is being hit with issues again.
You never used them side by side to claim that iPhone 4 with iOS4 is better than the Nexus One with Froyo. Really have you?
I have an iPhone 3GS at home with my wife and an iPod Touch 64gb on myself. I use a Nexus One daily. I have the actual life experience with these devices for months. There is no comparison between the 3GS and the Nexus One, even from the start with Android 2.1. iOS4 fails to impress, mostly catching up with only some features Android has had a long time with, such as ahem, wallpaper.
Look at the iPhone icons. Its still the same boring tiles. Android uses irregular icons. Look at the Opera browser icon on Android and on iOS. On iOS, the O is on a tile. On Android, the entire O outline is the icon. You don't see any tiling. The wallpaper draws right into the O's boundary and then fills inside the O. If its a living wallpaper, the entire animation would actually draw right through the space of the O. That's how sophisticated the graphical API of Android is.