The First Grande Coalition-
Units of the Coalition
France, Castile, England- Western (Highest players were tech 8)
Infantry- Men At Arms/Long bow (Tech 5 unit) 3 pips (1/0,0,1,0/1)
Cavalry- Western Medieval Knights (Tech 1 unit) 3 pips (1,0/1,1,1/0)
Poland, Lithuania- Eastern
Infantry- Eastern Militia (Tech 5) 4 pips (1,1,1,1)
Cavalry- Stratioti Cavalry (Tech 6) 5 pips (2,1,1,1)
Kazan- Nomad
Infantry- Eastern Archers (Tech 1) 4 pips (1,1,1,1)
Cavalry- Eastern X Cavalry (Tech 1) 6 pips (2/1,1,2,1/2)
Mameluke- Muslim
Infantry- Muslim Duel Infantry (Tech 5) 4 pips (1,1,1,1)
Cavalry- Shayhanid Cavalry (Tech 6) 6 pips (2,1,1,2)
vs
Byzantium- Anatolian
Infantry- Azab Infantry (Tech 5) 5 pips (1,1,2,1)
Cavalry- Timariot Cavalry (Tech 6) 6 pips (2,1,2,1)
Hungary- Eastern
Infantry- Eastern Militia (Tech 5) 4 pips (1,1,1,1)
Cavalry- Stratioti Cavalry (Tech 6) 5 pips (2,1,1,1)
So just a quick look but the western alliance players were the least competitive forces out there being 3 pips behind in cav as opposed to matching or a pip behind for everyone else and a full 2 pips behind in infantry as opposed to 1 pip behind for everyone else. Combine that with a Byz general that seemed to give +2 during one of the phases (shock i think) even when an enemy 3 star general was there you can see a major edge developing.
So france facing azab, azab get +1 shock attack and +1 or +2 morale attack depending on which unit they had, in return the western infantry attack pips were -1 or 0 for shock negated by enemy pips for morale. Cav comparison is worse +1 or +2 to shock and +2 or +1 to morale for byz, western in return are +0. Then take off at least 2 on shock phase for western and add 2 for byz thanks to the better general. for end totals of +3 S +2/3 M for inf at a return of -3/-2 S -2 M.
Going to assume tech 8 for all players though some were at 7 (but byz were 8).
(15+5* (dice roll+3 (byz) -3 or -2 (westerners)) *.95 (shock tech modifier) or 3 (morale modifier) * (1+combat ability [none so far i think]) * byz disc/western disc (inverse for western attack rolls) The last one most players were either 100 or 105, byz was 115, so 1 or 1.1 on the attack and .87 or .91 for the western side attacking.
Hope that illustrates part of the situation that they were running into. Please note Byz had the best morale in the war and on top of that have 2 pips of morale damage to 0 or 1 for western troops.