I think standardized tests are just not the way to measure reading comprehension, and questions like those in the article you linked are totally detached from reality. I personally managed to get by okay on them, but it seems pretty well understood that true comprehension - at least when it comes to fiction - is best gotten at in a more discussion based setting with more flexible interpretative possibilities.

I actually had a whole other experience being a really slow reader, and got taken out of other subjects to spend more time on it even though I scored "college level" on vocabulary. Always wondered if it's due to some mild dyslexia or something.