Our tests (and our partners' tests) are not made to skew too easy or too hard. They're designed to simulate the real GMAT exam as closely as possible. Some of our students find certain tests to be easier than the real GMAT, while other students tell us that those same tests are harder than the GMAT! It's partly luck, and partly a matter of which question types you find easier or harder.
But, overall, you should find that each of these these tests is a good simulation of the real thing. And, the more practice tests you take, the more confident you should feel in the level at which you are scoring.
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