Landscape?
How many people use their iPad in landscape mode most of the time?
A tablet is usually used in portrait mode which, being widescreen, the Surface will not be good at (all the pictures are landscape - that is for a good reason) . For that reason, I do not believe the Surface is going to be used the same way as the iPad.
Which means it's a laptop/ultrabook replacement and I'm just not sure how big that market is. I might be wrong and there could be massive pent up demand for a device like this (I was wrong about the iPad when it first came out, couldn't see the point, but am on my second one now and love it). It just seems to be attacking a small, niche market.
It's a long road from announcement to success and to release in the USA only at launch seems to show a distinct lack of faith by MS - I wonder if it will ever make it to these shores...
I hope I am wrong as I would like to see it succeed. We'll see when it's released.