1. I dont set the winrate or decide game mechanics, but I was talking about 1 xeno : 1 marine balance, not the balance of the whole gamemode
2. Even a small group is enough to deter lurkers
3. I did not say you should not use armor. I am just saying armor matters less than going solo as a marine.
4. The things you are saying are examples of asymmetric warfare
5. IMHO buckshot is better since 1 PB can crit even ancient lurkers now but everyone should use what they prefer