Throwing was balanced it seemed at some point. However they made it much more accurate. Sure the damage is fine (one shotting horses and people) but the accuracy should be at a level that reflects the extreme damage it does. Ive been hit by thowers at ranges archers couldnt hit me at, whereas back in the day there where many scenarios where i would be confident the thower could not or would not be able to hit me, with the accuracy basically no one can come anywhere near them now without being almost guaranteed to be killed.
And thats not even getting into the large ammo capacity and rate of fire/fireing on the run. So how do you kill someone you cant even come close to, even sheilders they do so much damage they 2 shot your sheild. Only archers can kill them or a gang of infantry (assuming the thrower isnt completely lacking in situational awareness), and even archers have a tough time given in my experience throwers have tons of IF/STR, ive couched throwers with a great lance and they survive more than plate crutchers do. Low damage -> high accuracy, high damage -> low accuracy imo, throwers shouldnt have both as well as the highest rate of fire, being able to shoot on the run which no one else can do, and having more or less infinite ammo as they can carry alot and easily manuever around and pickup the weapons they missed with.