Bo has a longer fuse, and Luke does not. Another is that Bo is more reasonable and again Luke turned out the complete opposite. Number 3 is Luke has more experience, but Bo has little experience in this situation. that they both had problems with their fathers so said Luke. ( i can’t find the page, but it’s in the book). So I guess that’s something.
Even though Bo and Luke don’t have that many diffrences or simmalarities, they are still family and even though they fight they should still love one another.