I guess there is always the possibility of someone intentionally trying to mislead you. You could also look at it from the other angle. If a complex has good ratings then it could be just as likely that their office staff is trying bump the numbers up.

If you look at multiple compelxes on the apartmentratings.com then you'll see that very very few of them actually have a good rating. In reality not all complexes can be bad. People are more likely to get online and post a review if something bad has happened. If someone is happy then they are more likely to just let life go on and not comment at all. It's just nature to vent more about your bad experiences.

I guess it is possible.