This year, the big national wireless carriers will be racing to stake their claims in the new frontier of service, ultra-fast data access, for smart phones and laptops as well as for gadgets like tablets. The companies are boosting their wireless data speeds and revving up the marketing hype. They’re moving away from talking about call quality and coverage, and focusing on data speeds, megabits in place of minutes. For consumers, there are benefits in the form of faster service and cooler gadgets. Yet some of the marketing campaigns seem designed to confuse consumers about the gadgets’ speed. At the International Consumer Electronics Show in Las Vegas this week, Verizon Wireless revealed the 10 gadgets with built-in access to its new high-speed wireless data network, including smartphones, tablet and laptops. Some are to launch as early as March. Along with Sprint Nextel Corp.’s subsidiary Clearwire Corp., Verizon is at the forefront of the move to a new network technolo...