Hi,
The similarities is 99.9%, i did a rigorous practice on the website for 3consecutive days and had about 3 hours of revision on the very day of the test, it was like carbon copy of what i have read when i sat for the test.To be honest with you, the site is quite good which serves as a guidance, you need to practice it, as the answers might look alike.
Wishing you all the best of luck.
Adeniran Adebare