I agree that the iPad is becoming more useful, but until I can do EXACTLY what I do with my MBP on an iPad it isn't and can't and wasn't designed to be a standalone device.
Also, suggesting someone is going to "sound like an idiot" because they disagree is absurd, and makes me lose all credibility with a tech reviewer and his/her review. People have different use cases and NO ONE will sound like an idiot if they can defend their position logically, even as far as stating only their own use case.
Lastly, anyone suggesting the 10.5" would replace a 12.9" is also making an absurd statement. Just as with the 17" MBP, it's more than just the larger screen (although for the iPad there isn't much else). Having a larger battery is a boon, and with multitasking getting better and better it's a no brainer to grab the 12.9" It's not that much larger than the 10.5" and gives you more of what you need in a device where the only interaction is going to be via the screen.