Two words: Android fanboy. Absolutely sickening.
1) It doesn't compare. Navigon and TomTom kick Google's free navigator system to the curb.
Clearly, you've never used the maps application on an Android 2.1+ device. Google maps/Navigation on these phones is better than Navigon and TomTom, combined. There is no company in the world that has more "information" about various businesses and such than Google. Simply open maps, type or say "panera bread". It will find the closest one, and begin to route you, or place a phone call, or give you reviews, or tweet/buzz/share the place (twitter/facebook are INTEGRATED into the OS), all with 1 single touch. I've used both TomTom and Navigon on the iPhone, and it can't do that. Simple as pie.
2) It's not Apple's fault. It's AT&T's. Blame them.
I have an AT&T 3G Nexus One, and I'm still able to tether/setup a wifi hotspot natively without any special plans. Apple sells the iPhone to several other countries, so why don't they include that feature for them?
3) Yes. It does. Android's version of multitasking is crap. I seriously need a Task Manager? Yes. Do I really need that game running in the background? No. Can I switch between apps as fast as Apple's fast-switch multitasking method? No. Do I conserve battery life? No way. So yes, it's "done the right way."
You don't need a task manager at all. With a Linux OS, it's not needed. The "rumors" that you've read about needing these task killers are rubbish, and Android will automatically kill any programs (not in use) when it's needs more memory. (which it doesn't since the N1 has 512MB RAM, but so does the IP4)
When I receive and instant message, I flick down the notification bar, click on the message, and it's there. Instantly. Not just the "text" that I received in the message, but the whole app is there, loaded and ready to be used. With iOS4, you have to wait until the app loads up again. Android is the clear winner here.
4) Who cares? I'm sure there's an app similar to it already in the App Store, which has far more high-quality apps than Android.
There isn't. Try and find one. 🙂
5) Flash = battery sucker, CPU hog, annoying ads, etc. Forget it.
Flash is on millions of websites. Millions. It may use up additional battery, but when your done, simply close the browser or the page in question. It's that easy. Apple is essentially hindering your web experience by not rendering content that was put there by the web page owner/creator.