If you read about others' experiences, you will know that our Preparation Kit is tougher than the actual exam.
So, you should pass the exam with the kind of score you are receiving in our product. However, I strongly advice you to work on your weak areas by doing theoertical study as well as practice (i.e. writing code). You can use the Customization feature of our product to assess your progress in the weak areas.
Yes I would agree the whizlabs is harder than the actual exam. If you are passing the whizlabs above 80% you more than likely will pass the exam. The closser you are to barely passing Whizlabs the bigger the risk.