S007r ...From my experience, the verbal section was pretty similar to the OG, except the passages in RC were much longer, and the SC also has much larger underlined sections than those in the book. But the underlying concepts that are tested were pretty much same. I'd say the verbal is way more representative than the quant section!
I think what JP means when he says the actual test is similar to the quant section of the OG, is that you will not find any question types that haven't been covered in the OG (except for a few like prob. combinations etc.), and the concepts that are tested in the OG are actually what are tested on the real thing, though questions on the real thing might be slightly longer and include a few more steps.
I have worried over the quant section of the test myself, I've decided to strenghten my basics and just stick to the OG quant concepts!