In the long run, all countries behave in a similar manner.
I usually fly Bish. 50% of the time they're organized like a bag of marbles. 25% of the time they can grab a field in minimal time. The rest of the time they look for good fights. How is this different?
Play the game. Fight your fight and have fun. Ignore 200. 
Knights are organized 25% of the time, able to quickly take a base 10% of the time, and look for furballs 75% of the time.
Having flown against and on all sides, knights have the best pilots on average.
Rooks are more similar to bish, save organized only 40% of the time, and look for fights more on average.
Rooks have the nicest players probably. None of the SPIEZ thing you occasionally get on bish, less of their "were so:gr8, we woned the war!" attitude, and less of the knight's egotism.