When the competition absolutely sucks, the nature of replies will be predictable.
Even if there's some positive aspect to the Sony product or most other non-ipad tablets, there is usually something overwhelmingly lousy about them that 9 times out of 10 it doesn't make the purchase worth it. Probably for the same reasons Apple's competitors can barely move product. Very simply, Apple has perfected the basics of a touch-based device. No matter how many features the competition would like to cram inside a slab, the basics are usually sorely lacking in terms of how the interface interacts with the hardware - that is, optimization.
This isn't as simple as Pro-Apple, con everyone else, though it's remarkably easy (and in many cases understandable) to hold such a view. However, when the competition is so far behind Apple in User Experience, most of the commenters who happen to make that a priority (which is only natural) will warn prospective buyers of non-Apple tablets to be careful about what they're about to get themselves into. Buyer's remorse sucks.
I plan on buying the transformer prime from somewhere that I can return it back to so, if for some reason, it does not work as I'd hoped, I can return it and just go the classic "Apple Route".