Board Thread:Questions and Answers/@comment-25986124-20150414082554/@comment-26109599-20150414220557

Well, if you haven't gotten to MOAB territory yet, then you don't really need fourth tier stuff. To be quite honest, I never use fourth tier upgrades except in CT. On that topic, though, MOAB Maulers will only get you so far. The MOABs gain health and speed extremely fast. After about round 40, DDTs become very hard to stop without MOAB Assassin, Pop and Awe, or Sabotage Supply Lines (unless you have a ToTMG or something), especially when they appear at the very beginning of the round, before your Spike Factories have had a chance to spawn many spikes. Of course, you never get far in CT without farming (which I hope you do). ;-)