I believe they all have good strengths and their weaknesses in both PvE and PvP. One thing Bungie did the best @ in this game was balancing characters, and subclasses. A lot of people say it takes more skill to be a Titan in PvP, I just can't agree, because my kd is pretty much the same between all 3 of my characters. They all take skill in different aspects of the gameplay. All this "master race" or "who's the more skilled toon" talk is pointless imo.