I play titan and recently have been doing quite well in games playing the defensive tree. The shield is good to use as a super it doesnt get big kills because it doesnt need to. People who are new to having it used run inside and cant damage you much and are easy kills, people on the outside stand still shooting you, waste their grenades and line up easy kills for you. If you know you just got your super chance are everyone else has theirs, put shield down and wait until people use their supers on it and move out of the way therefore wasting their super. Also on capture the flag, place the shield down to take any cap point you want its so easy, Alongside every melee kill giving you another personal shield and blindly fast reload speeds. Honestly titan is probably one of the better classes in pvp it isnt extreme at anything and isnt bad at anything.