Apologies for the following run-on sentence.
Honeycomb has: a file system, real multitasking, supports flash for those who need it, a better notification system, SD card support, no need to have it connected to a computer, widgets, more customization, an awesome stock browser, apps that normally would not be accepted into the App Store, support for keyboards, mice and gaming controllers.
The only thing the iPad has is a dumbed down OS and better applications. I've owned both but I'm currently using the iPad. This is simply because of the App Store; as soon as the Android Market catches up, I'm ditching my iPad.
Well, I appreciate that you took the time to respond with a detailed answer to my question. Well done. A person can look at your list and decide if those features are useful to them or not. I, for example, think it's good that the iPad has no traditional file system. This gets into the whole post-PC paradigm that I think we are heading toward.
I would like better multitasking and notifications too. It's coming.
I never allow Flash on any device that I own, and am glad that it's off the iPad, but I understand why some people would want Flash, and I can see why they would want this to be under user control. I also know how people would go running into Apple stores to complain about their iPads being "broken" because of Flash, so that's part of why Apple does not allow Flash. It simply isn't 100% ready for tablet use by average consumers (not experts like yourself). Apple has a philosophy of covering the needs of the middle 80% of the world, and the 10% at the top who are geeks can't stand that, but Apple isn't marketing to geeks. It's a conscious decision that is working out very well financially for them.
SD card support? I cannot imagine what use I would have for that, so I guess that's not for me either. Widgets? Ugh, hate them. But hey, if you want that mess, go for it.
Apps that Apple rejects? I know of none that I want or need.
Keyboard support? Already there.
Mouse support? Uh, post-PC remember? It's not supposed to use a mouse. If you have a task that requires a mouse, use a PC.
Game controllers? That's what gaming systems are for.
So while your list is impressive to me, and I accept that for your needs, it doesn't speak to me very much. As I have always said, geeks will never like the iPad. Apple doesn't care. They aren't marketing to them.