Las Vegas has seen its share of famous fights, and this week at CES heavy weight defending champion AT&T (which shares the title with Verizon Wireless) dukes it out with mid-weight challengers T-Mobile US and Sprint in the battle for the family plan. Who will win the next round? And are they even playing the same game?

Survey says…targeting AT&T and Verizon Wireless family plan subscribers – particularly those on the newer Mobile Share  and Share Everything plans – is an uphill battle, as propensity to churn in these groups is low. A recent survey of mobile consumers conducted by Strategy Analytics shows that users on family plans are most apt to say they are “very unlikely” to leave their current mobile provider in the next 12 months, with fewer people on family plans “somewhat likely” or “very likely” to churn than those on individual plans.