In browser rendering tests done by TechnoBuffalo, with the tester being honestly admitting being an iPhone fan, the Droid Incredible smoked the iPhone 4 on browser. First with both phones on wifi, then smoked the iPhone 4 again with 2 bars on Verizon's band vs 5 on AT&T's band. It was all posted in YouTube. Note, this is all in Android 2.1.
In my personal experience, the Samsung Galaxy S with the Hummingbird processor feels smoother and faster than the Nexus One. When the Nexus One is on ++Android 2.1++.
Now the Nexus One is on --Android 2.2 Froyo--.
And you can feel Froyo's speed, in such a way, the Nexus One now smokes the Samsung Galaxy S. Its like a load was taken off the phone and something turned on the afterburner. The Froyo's Dalvik now runs apps 3x to 5x faster with the JIT. On top of that, the browser on Froyo is faster with Google's own JS rendering engine from Chrome, which we know is the fastest in the world because it has no trouble smoking both Firefox and Safari in rendering benchmarks. When in Wifi, the rendering of pages takes place in flashes.
So many freaking improvements. The multitouch bug is all gone, the reception is better and stronger, better memory management means the apps now all got more memory to work with, it can now display 8 instead of 6 of the most recent apps, I can now mobile wifi hotspot which I can deactivate from the notification bar and I can use Flash 10.1 on the browser to boot. When using Flash, the plugin would faithfully recreate the unique controls used in the video player from each website, whether its MySpace, Daily Motion, VEOH, YouTube, or Megavideo.