Granades vs. fire arms

(Exploding arms in general can only destroy enemies and no walls or fences)

Granades:

  + Grenades have a big exploding radius causing any nearby soldiers or aliens to die, but you can't fling a grenade over a fence. 
  - Arms or other items those lie at the exploding range are destroyed.
  - The grenades explosive force does not pass through fences, windows or doors. 
  -/+ ... 
  (*Mines are tripped by enemies those come into its range) 
  (*Rockets can indeed fly through fences, however as with the grenade, the explosion does not come through)

Fire arms:

  + Greater range allows a kill without the enemy knowing where the shot came from. 
  + ski chimneys through fences(Dont really know what the hell this means...) 
  - Fire arms do less damage than Grenades and Rockets
  -/+ ...