Not if the reason for saying it is to tick off Appleheads.
Apple is like the Borg, once they've got you, they've got you, and you don't know any better.
If you like to tinker and customize, then the Droid is the way to go. You can pretty much do anything you want with the phone, including customizing your home screens to suit your needs. Can't do that with an iPhone, but the iPhone is easier to use, by a 5 year old or your grandmother, because you don't have to learn much about it or think about what you're doing to use it. It's very intuitive, while the Droid takes some time to learn. But it really comes down to whether you like to customize and tinker, or if the phone is a tool and nothing more.
There are many more apps for the iPhone, all of them personally approved (or rejected) by Steve Jobs, but the iPhone 4 does not have expandable storage. The Droid, on the other hand, supports MicroSD cards up to 32GB, you can extend its storage up to 40GB. So there's that.
If you are often not near a charger, then the iPhone is for you. The iPhone has impressive battery life. I have an extended battery on my Droid, though, and am rarely away from the charger, so that's not a problem for me.