Even still, reviews have become so misleading these days. Any review that wasn't made by a well established person tends to be well over or way under.

In terms of perspective, all of the levels that people actually play regularly are all at least 8.0's or much higher. Usually 8.8+. Therefore, in order to even have a playable level, it has to be stunningly good, considering it's getting harder and harder to get those marks these days.