the TW matchmaking is a problem. a lot of guilds exploits this matchmaking, sandbagging, going with less players, and enjoy easier fights. it shouldn't happen. I'm not sure if you are now realizing t...
The easiest way is that a 300M Guild hit a 300M Guild..maybe plus/minus 1% what are 3 Mio. . When then Guild A decides only to go with 40 participants ..fine....