AT&T and Verizon have long dominated the American cellular landscape, but there’s always been a top dog (more recently, Verizon). In the first quarter of the year, however, something strange happened — the carriers virtually tied each other for market share, according to estimates by analyst Chetan Sharma. While the providers publish different figures, Sharma believes that they both had 34 percent of US subscribers. AT&T reportedly leveled the playing field when it bought Leap and added all of Cricket’s customers.