This is the worst made up statistic ever.
Here's a more realistic outlook:
75% of players just want to play the game as a knight or a lord and fight other realms. 25% of the players care about progressing and being power hungry. 90% of those 25% just want to keep the power and not do anything for the fun of the other 75% once they get it. Its the 5% of the 25% that will make things more fun.
To be fair, its an extremely flawed idea that letting the big guy win will just result in infighting because of the same reason now, it will still end being gangbangs unless you spend a lot of time on diplomacy which means peace for awhile. Medieval nobles weren't just like !@#$ the realm and all the power I hold, let's go attack a realm that will result in the destruction of my realm.
