Noobs:
"I use the sneaky shotgun sleaze class, the one where you crouch and sneak over to the enemy's spawn and camp there with your sniper [spoiler] Matador 64[/spoiler]
Titan... Because they have one thing that the other classes do not.
And that is...
[spoiler]PEREGRINE GREAVES.[/spoiler]
[spoiler] "Wait a second, aren't those the ones that increase flying shoulder charge damage? That sounds kind of bad. "
You're right, it does sound pretty useless. How much damage could it possibly increase? Well the answer is: A LOT.
See that Sunsinger with Ram? Radiant Skin, wow, what a tanky mother-blam!-er. It's too bad he dies when you knee him in the face.
Voidwalker about to lob a collapsing star at you? No problem. Kneenja him before he does that.
Little striker pissing his pants and about to level the place with a Fist of Panic? Professional counsellors advocate the use of Peregrine Greaves during panic attacks.
Armor of Light Defender, nigh invulnerable to everything but collapsing stars, beams of Solar Light, giant shockwaves of arc energ- FAAALLCCON KNEE
Cloud wannabes omnislashing around the place with an electric toothpick? Say hello to my MOTHER-blam!-ING O-KNEE-CHAN.
Wait, a Sunbreaker? Oh, no. The once invincible flaming Thor, my one weakness! The destroyer of- PFFFFFT. More like NONE-breaker, I was just kidding.
It gives your flying knee attack 300% increased damage. That's 600 damage in crucible! In comparison, the hp of anything in pvp is... Significantly less than that. Not only is it a melee attack, it's also an arc attack. Arc burn and brawler modifier on? Enjoy oneshotting that Hallowed Ogre. It'll deal more damage than Celestial Nighthawk. With solar burn.
Oh yea, did I mention that it also turns your knees into lightsabers when shoulder charge is active? And most importantly, it changes colour with your shaders. Checkmate Warlock and Hunter peasants.
PEREGRINE GREEEEEEAAAAAVVVVVVVVEEEEESSSSS!!!!! [/spoiler]