Titan is easily the weakest PVP class. The grenades are avoidable and if you are good you will rarely ever get shoulder charged. Sure the fist of Havoc can easily destroy one opponent. Hunters can easily destroy a team on both sides of the map by button spamming. There is no contest. Hunter is the top PVP class, warlock comes in second because their supers are just ok. Titan are the worst. I play all 3 classes for crucible so I'm not a BK or biased here. If I want to play my best I use my Hunter. Check the top 100 PVP players about 80 of them are hunters.