There was no changing of the guard in the United States last month as new video game consoles from Sony and Microsoft continued to battle for top billing. The race in February was so tight, however, that the pricier Xbox One actually managed to pull ahead of the more popular PlayStation 4 in dollar sales. Market research firm NPD Group on Thursday night released its numbers for February video game sales, showing once again that software sales continued to slide despite the recent debuts of the Xbox One and PS4. According to the firm, retail sales of new video games came in at $328 million in February, down 11% on-year. Strong hardware sales picked up the slack, however, as continued demand for