I don't want to sound standoffish but I don't think replies to your questions are going to be helpful. I am not sure what you are trying to achieve by counting the number of "difficult" questions in each section.
First, even though the question might seem easy, it could have a trap built-in and a test taker will never know that he/she got the question wrong.
Second, what might seem hard for one person, could be easy for another. Like Pelihu, I did not feel grossly challenged in the verbal part up until Q39 and thought I did horribly but pulled a 47.
In quant, I felt challenged all the way through, altough the questions were not "hard." I finished with a 42. Now, my total score is 720. I am above the 700 mark but solely because of verbal which leads me to my third point. There are several ways to get above 700: have a balanced score or do very well on one of the sections.
Having said that, to get a higher score, you have to master the basics first under time constrains. After all, GMAT might never give you a 700-level question if you keep getting the 500-level questions wrong.