i have Android 2.1 and it's horrible. It has some nice features, but if you don't use other desktops you can't turn them off, to do anything requires many clicks. Connecting to the internet in Maemo is tap status bar then internet connection; in Android it's settings, connections, wifi, turn on, connect. A big pain. That's most of my experience with Android: everything takes longer to do, and multitasking is a bit of a joke because it decides what to close and what to leave open, there is no task manager so you have to install one and most things don't have a close button. Without an SD card it won't even let you do most things like install an app or take a photo (!) and whereas Maemo5 it's pretty obvious what to do, Android leaves you scratching your head. I'm sure once you're used to it it's easy, but the point is it has a learning curve just to use out of the box features. Maemo on the other hand is perfectly simple out of the box but it can be more complicated if you want it to be.

Widgets aren't the same. AFAIK, you can't have desktop command widgets on it, and overclocking is far, far more labourous than installing a kernel and typing in x-term, of using the GUI in QCPU