Investigation of Battle Odds

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Ok, while waiting for some more data mining on the XP problem, here's some rough data to give some idea of the odds ratio to answer Morat's question above.
Played on VH/VH as Greeks, normal unit size and unless mentioned otherwise, all troops are at full number of men, have no XP, no upgrades and no general leading them.

Enemy		Self					Odds (enemy:self)
1 Peasant	1 Peasant				1:1
		2 Peasant				1:2
		3 Peasant				2:7 ???
		4 Peasant				2:9 ???
		5 Peasant				1:5
		6 Peasant				1:5 (rounding down?)
		7 Peasant				1:10 (rounding up?)
		8 Peasant				1:10

1 Peasant	1 Mil.Hop				1:5
		1 Mil.Hop, 1 Peltast			1:15
		1 Mil.Hop, 2 Peltast			1:20	

		1 Peltast				1:10
		1 Peltast, 1 Peasant			1:10
		2 Peltast, 1 Peasant			1:15

		1 Hoplite				1:15
		1 Hoplite, 1 Mil.Hop			1:25
		1 Hoplite, 1 Peltast			1:25
		1 Hoplite, 1 Peltast, 1 Mil.Hop		1:30
		1 Hoplite, 1 Peltast, 1 Mil.Cav		1:30
		1 Hoplite, 1 Peltast, 2 Mil.Hop		1:40

		1 ArmorHop				1:35
		1 ArmorHop, 1 Peltast			1:40
		1 ArmorHop, 2 Peltast			1:50
		1 ArmorHop, 2 Peltast, 1 Mil.Hop	1:50
		1 ArmorHop, 1 Hoplite			1:50

		1 Mil.Cav				1:10
		1 Mil.Cav, 1 Mil.Hop			1:15
		1 Mil.Cav, 1 Peltast			1:15
		1 Mil.Cav, 1 Mil.Hop, 1 Peltast		1:20

1 Town Militia	1 Peasant				5:1
		2 Peasant				5:2
		1 Mil.Hop				1:1	
		1 Mil.Cav				1:2
		1 Mil.Cav, 1 Peasant			1:2
		1 Hoplite				1:3

		1 Peasant (+weapon upg)			5:2
		1 Peasant (+weapon upg), 2 Peasant	5:4	
		1 Hoplite (+weapon upg)			1:4
		2 Hoplite (+weapon upg)			1:7
		3 Hoplite (+weapon upg)			1:10
		1 Mil.Hop (+weapon upg)			1:1

2 Peltast + 	1 Peasant				25:1		
1 Heavy Peltast	1 Peltast, 1 Peasant			5:2
		2 Peltast				5:3
		2 Peltast, 1 Mil.Cav			5:4
		3 Peltast				5:4
		3 Peltast, 1 Peasant			1:1
		2 Peltast, 1 Mil.Cav, 1 Peasant		1:1
		3 Peltast, 1 Mil.Cav, 1 Peasant		6:5

As you can see, rounding fractions here is extremely quirky.
If there's anyone who wants to have a crack at data interpretation you are more than welcome to try. And if we feel that it is worth opening up a new thread on it, go right ahead. Thanks.