Call me old school, or just old, but I say that if a team loses those games, then by definition they aren't as good as advertised. Part of the make-up of a great team is mental toughness, and another part is good coaching. If you suffer a let-down against a lesser opponent on the road, then the team is lacking one or both. So yeah, call it a trap or whatever, but great teams don't get caught in them.
That said, I wouldn't consider facing a ranked opponent on the road to be such a game. That's a good opponent you're facing in their house and in front of their own fans. While perhaps not expected, it's at least an understandable loss, if suffered. Of course, if they call it a trap, then see the prior paragraph.