(N = Number)
AI Damage Multiplier
Default: N x dmg
This scales how much damage AI does on this difficulty. Negative values (down to -1x) scale damage down while positive ones scale it up.
VS
Player Momentum Multiplier
Default: N x momentum
Momentum Multiplier only applies to players on incoming damage.
*****
Do they both stack? Is one only for AI Player Pets and the other for Player Character only? Is Player Momentum Multiplier in regards to 'Force' of Biotic Powers? Something different entirely? I am confused...

Give me an answer in regards of the damage I am receiving with the number at 100 Damage(with whatever source it may be coming from).
IS:
AI Damage Multiplier
Default: 1.0 x dmg
Player Momentum Multiplier
Default: 0.0 x momentum
...the same as...
AI Damage Multiplier
Default: 0.0 x dmg
Player Momentum Multiplier
Default: 1.0 x momentum
???
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Trying to custom balance the Wave Difficulties, but this one is throwing me a loop. Thanks in advance.