: I just looked into the game's BScoreManager asm code. The 'Combat Efficiency'
: score is calculated via the total 'killed' combat value divided by the
: total 'lost' combat value, then normalized in the combat bonus range
: (which is by default 0 to 5; none of the map scripts override this).

: To give some examples of various object combat values: Buildings (typically):
: 10
: Turrets (not upgraded): 12
: Turrets (upgraded): 14
: Cobra: 14
: Scorpion/Grizzly: 20
: Hornet/Hawk: 10
: Scarab: 120

: Typically, an object's 'bounty' is the same (or near) as their combat value
: (bounty is what builds veterancy). Eg, the hunter's CV is 4, but its
: bounty is 5. Chieftain's CV is 30, bounty is 60. Scarab's values are both
: 120.

: Consider the tank's CV of 20 to the Hornet's 10. If you take out a tank,
: that's +10 'killed' for you and -10 'lost' for the enemy. So building an
: entire army of tanks is not only extremely freaking stupid war wise (air
: beats vehicle), the Hornets have a lower combat value than your tanks.
: Meaning they have less to lose. Hornets are cheaper, train faster (IIRC),
: don't raise enemy veterancy levels faster, and don't hurt your Combat
: Efficiency rating.

Hornets do train faster than tanks, even with the "Reserves" upgrades. I think I've only played as Forge online once. Grizzly tanks are pointless. PT Scorpions are evenly matched against them and still offer a better bang for your buck (of course, this is with the current TU in place... remember when Gauss hogs and they cryo glitch reigned supreme? *shudder*).

A well varied army is a successful army :)