I thought it was easier as well. I answered 83, which seems like a good number. Very few were guesses.
However, its hard to say how I did. I've talked to a few people, who answered 45, 65, and 80, so I feel relatively I did well. (probably 800-900, idk). Still, I wasted some time on harder problems, and didn't move quite as fast as I could have. A few simple changes in strategy, such as skipping a few time-wasters could have improved my score drastically. There were very few problems I don't think I could have gotten given enough time. (maybe 5 at most). Also, I used limiting cases to eliminate answers, but I forgot about dimensional analysis. Also, lack of sleep was an issue.
Anyways, its all over now, ... no use worrying about the past. Just thought I'd give my comments on the exam for future test takers.
Yeah, the 4 released exams helped a lot. This past week I went through all 4 and figured out the problems and memorized relevant equations. Some of the problems on this exam were nearly identical.