Last week Consumer Reports came out with their ratings for wireless service providers. Verizon (NYSE:VZ) continues to lead the pack for postpaid providers with AT&T (NYSE:T) lagging. AT&T did score well for its 4G service which is becoming the lead service offering in the industry. As a result AT&T may see some improvement in Consumer Reports rankings going forward.   As I read the article I got to thinking about whether ratings such as these mattered to investors. The answer of course depends on whether or not there is linkage between ratings and subscriber growth. Or maybe the answer ...