@ Giaur:
Since I was also quite curious, how many troops an AI could/would build, I used the worldbuilder to count throught the troops Cyrus had before I started my attack...
I´ts no exact count, because I had to add up every city and stack, but it goes down to about 350 - 400 units (he had one stack of 11 carriers for example

)
I am right after system crash. I lost one pertition completely. I was writing post, when system crashed on me. I could give you some numbers but without a proof though (I lost that save, and all the others).
Cyrus: 5.8mln before 1.9 after
Wash: 1.8mln before 1.3 after
Units killed in this war:
1) Navy
Carrier 5
Transport 9
Destroyer 18
Battleship 10
in summary 42 units (both Cyrus and Wash)
2) Land
SEAL 13
SAM 25
Marine 5
Mech 27
Gunship 49
Artillery 57 (I was surprised, however I often left computer during AI's turn)
Modern Tank 7
Cavalry 12
in summary 195 units
3) Aircraft
Jet 16
Stealth B. 10
in summary 26 (mainly belonged to Cyrus)
The whole number killed units equals 263. Cyrus lost 5.8-1.9 = 3.0mln soldiers
Washington lost 1.8-1.3 = 0.5mln soldiers. So 6/7 of these 263 units belonged to Cyrus. That means Cyrus lost 225 units.
Some try to explain these odd things (in your and my save)
1) I killed more units so power drop should be higher (it is)
2) Cyrus had stronger military in your save (about 30% I think). He had more turns more to improve his military. I ended this war in 1946
3) maybe if you clicked one more turn, the power drop would be seen more clearly
It's the best comment/advice I can make.