I know it's kinda hypish to call everythin fase-ish but I couldn't say it otherwise.
What I meant was that unlike a Ribéry or a Navas who are true wingers with pace, ability to go 1 on 1 against the full backs and playing along the lines (baseline or sideline), Gourcuff like Pastore or Isco drops deep and plays more in the middle of the pitch (for the full backs to occupy the wings), relying on its vista more than his pace and playing more as a second offset 10 than a true winger. Hence, the "false".
Lyon plays tonight so if Gourcuff is in the same position, maybe you'll understand what I mean.