I actually agree. (for balance reasons) Snipers should be a 2 shot to the head (one to knock the shields down and one for the kill) to compensate increase rate of fire. Same thing with shotguns, (2 to yhe head) but give them a range increase. Lore wise, As guardians what enemy of equal power has the ability to oneshot us. On that note a lot of the enemies we face that are close to our power can't be oneshot either. So in effect he is correct if they want weapons to function in the crucible like they do in the field those weapons shouldn't oneshot.