Grenade Launcher (MK19) and RPG Splash Damage. Kill Radius too Low.

Is it or does it seen crazy that the RPG and Grenade Launcher on the vehicle require direct hit to kill someone?  The MK19 in particular is really bad.  The effective kill radius of these two weapons in particular are not like past BF games and even CoD seems to have the RPG better tuned for splash damage.