We’re accustomed to hearing reasons why one cellular carrier is better than another, but now, Sprint has even more of a reason to brag. According to a 3G comparison test conducted by PC World, Sprint has the most reliable network, beating out Verizon and AT&T in 13 cities examined by the magazine. This test is good news for Sprint and backs up the company’s claim of having the “most dependable 3G network.” PC World conducted the tests in March and April in 13 major markets around the country. Cities included