It makes sense Raz, but no worry: we're just guessing to get the ball rolling. Being afraid to say something odd isn't going to help us.

I included none at first and made that zero, but then walls were firing torches. I recall only soldiers threw torches when they came up to a wall and walls fired bolts.

I guess we just have to try, you can probably exaggerate something in the projectile stat to prove it's using on or the other. But that's not bulletproof either.

In STW I increased the size of arrows a lot to see better how they actually fired. Bullets couldn't be increased in size. I'm not sure about the possibilities here.

When you think you found your projectile, you could increase its power a lot, increasing the blast radius may work too. You can make trebuchets that will kill everything (except the generals as they have 2 hitpoints) on a huge map using only one shot. Or just increase it's power a lot, also increase the armour of a target a lot and see whether it still kills at a good rate. There are catches there too: in STW the ninja star ignored the armourlevel of a unit, it seemed to perform equally well vs armour 1 monks and armour 10 nodachi.

You can deduce and guess a thing or two from reading TW files, but you have to check very well whether it also works that way (inactivated, not implemented, exceptions).