Kempo consists of over a hundred styles, how do you expect anyone to compare them all. So no you did not narrow it down to two styles.

And besides krav maga is not a martial art its a striped down self defense course. There are two versions the military and the civilian, and unless you join the israeli army you will be learning the civilian version.

Either they both could know.

I narrowed down my choices of martial arts to these two. If its not too much trouble, please compare and contrast them in as much detail as possible. Thank you :) (Even a little detail is good though)