Interesting!!!!
Can you provide some links to the discussions mentioning? I would like to have a few for reference.
One thought as it relates to your question - if the gmac provides shorter passages, they will provide harder questions in order to keep the integrity of the test.
So I think you will have a bit of a catch 22 since most of the shorter passages are easier ones.
My suggestion would be to practice the harder passages regardless of the length.
Posted from my mobile device.