OXM Online: On Xbox 360, Activision’s Call of Duty and EA’s Battlefield series have been fighting over first-person dominance for years. This fall, Battlefield 3 and Modern Warfare 3 hit just weeks apart — and each has its fair share of merit to justify the hype. But what if you only have the time for just one game’s engrossing online experience and absorbing campaign? Which of these titles has the greater potential? Ignoring popularity, marketing, and sales, we examine each game’s main features to determine who’ll likely deliver the best experience in each category.