Back when AT&T first started rolling out its nationwide LTE network in late 2011, it was at least a year behind Verizon. In fact, when the third-gen iPad launched with LTE last year, we were hard pressed to recommend an AT&T model simply because LTE coverage was so lame compared to Verizon.
But things have changed. Thanks to aggressive pushes into new markets, AT&T and Verizon are now pretty much nose-and-nose when total number of LTE markets is compared.