Not at all. With the exception of Bladedancing Hunter, Titans are meant to be close and personal which can be hard to maintain in PvP when everyone else is adept at keeping you in range. Titan's are not very mobile making it difficult to close the distance to their preferred range which as they are designed for short to pointblank encounters. Every other game you've listed has the base class of equal mobility with weapon loadout dictating the range you play it. Class has no bearing on how you engage because there's no mobility penalties. Use your cover and keep trying to advance to get with fistacuffs range. You'll find your Titan surprisingly adept for it.