You need to be accurate with throwing knives and it has a cool down. I've had 10+ winning streaks with shoulder charge multiple times. I complain on my titan that they're op. I get too many hate messages because of it which is understandable. that's why i main a void walker warlock in crucible. DPJ does a challenge to see how big of a killing streak he can obtain with shoulder charge, and if you aren't aware who DPJ is he's a popular destiny youtuber with nearly 1mil subs. Throwing knives are only decent for getting a quick assist or taking out a weak enemy, even then i would much rather use my gun. Yes, if throwing knives could kill you in one shot in the head, then it would be very op if you were good with them. What I'm saying is if shoulder charge can be op, then throwing knives should too :)