Too much star power?

Is there a point where a team can have too much star power? I remember a few years back and an opposing player (a Steeler I think) was calling us the "Paper Champions" after they kicked our ass. Can a star studded roster create a certain illusion that eliminates drive/hunger on the part of the players? As a counter balance, the 1992 Dream Team fared just fine, yet against substantially inferior opposition.

My initial gut instinct, "too much star power" might not be a good thing. Thoughts?