It'll Be iPhone 4S Versus Droid Bionic
Here is a good level headed post from MacObserver that compares the best Android device that Verizon Wireless has and compare it to the iPhone 4S, to be released on October 14th.
One is faster, decent battery, and heavier but has a larger screen. While the other is smaller, lighter, but has a slower wireless Internet connection.
You decide which is which and see how they will compare head-to-head in eleven days.
I think it's also important to note that the iPhone 4S will be sporting a more updated OS while the Bionic is running an OS that is at least a year old and while Android 4 is due out in November, it can take months before Android devices get OS updates.
Whatever camp you're in, this is fantastic. Competition. It's what this is all about.