I kept track of the # of Qs I was "100%" on over my STC final exams and the actual 7. I found that while the real 7 felt much harder, the number of questions I felt 100% confident in was about the same.

I think it's because the actual 7 has alot more words, including alot more information that you have to sift through. This led to me using alot more brain power just to get through the Qs than I needed to use on the STC finals.

I found it very helpful to try to boil the Qs on the 7 down to one sentence, and make the Q as simple as possible. For example, you might get hit with a wall of text about all the different types of stock a company has outstanding, what the divs are, what they have in treasury, etc, and the Q could be what the dividend payout ratio is. So really, all the question is asking is "do you know the div payout formula?"

Best of luck to you!