74 exp per infantry unit isn't that much, that isn't even enough for extra damage, and since the enemy didn't get through his armor, the extra health wouldn't have helped either. (In the case of the range units). So even without the exp, he would've won with the nuke.
I realistic conditions damage has been proven to fail in pretty much every possible circumstance (maybe a few oddities here and there).
If you win a battle they suck because either:
It lasted one round and they never got to fire
It lasted more than one round and you took unnecessary casualties because if they were range you would have kill more on the first round
It actually lasted long enough to matter and... DERP IT LASTED MORE THAN THREE ROUNDS
(Yes I know it does more damage than ranged by round three)
If you lose a battle then they suck because:
If you had more ranged you would have done more damage
or they derped and let the battle go on for more than 2 rounds.
Them being bad =/= you being good