It's not unfair and I've done the same thing. A resume is the first impression you give to a prospective employer; if you can't bother to make sure the details are right on it, how likely are you to bother with details on all the projects you'll be doing over time when the boss isn't necessarily looking over your shoulder?

That said, "I have advance knowledge..." isn't necessarily incorrect, if they are talking about their prophetic talents and not their level of expertise. :)