Terran Units
       
Unit

Size

Ground Attack

Air Attack

SCV Small Normal -
Marine Small Normal Normal
Firebat Small Concussive+ -
Ghost Small Concussive Concussive
Vulture Medium Concussive -
Siege Tank - Tank Large Explosive -
Siege Tank - Siege Large Explosive* -
Goliath Large Normal Explosive
Wraith Large Normal Explosive
Dropship Large - -
Science Vessel Large - -
Battlecruiser Large Normal Normal
       
BW Units  Size

Ground Attack

Air Attack

Medic Small - -
Valkyrie Large - Explosive+

Zerg Units
       
Unit

Size

Ground Attack

Air Attack

Larva Small - -
Drone Small Normal -
Zergling Small Normal -
Hydralisk Medium Explosive Explosive
Ultralisk Large Normal -
Infested Terran Small Normal* -
Broodling Small Normal -
Defiler Medium - -
Queen Medium - -
Overlord Large - -
Scourge Small - Normal
Mutalisk Small Normal Normal
Guardian Large Normal -
       
BW Units  Size

Ground Attack

Air Attack

Lurker Medium Normal+ -
Devourer Large - Explosive

Protoss Units
       
Unit

Size

Ground Attack

Air Attack

Probe Small Normal -
Zealot Small Normal -
Dragoon Large Explosive Explosive
High Templar Small - -
Archon Large Normal+ Normal+
Reaver Large Normal+ -
Shuttle Large - -
Observer Small - -
Scout Large Normal Explosive
Carrier Large - -
Interceptor Small Normal Normal
Arbiter Large Explosive Explosive
       
BW Units  Size

Ground Attack

Air Attack

Dark Archon Large - -
Dark Templar Small Normal -
Corsair Medium - Explosive+

* Weapon does splash damage to all units
+ Weapon does friendly splash damage (meaning it will hit allies and enemy units but not your own)