Someone said that the rank cap is at 100 points but I never really found out what is the highest rank in the game?
it is. There is a glitch with the debug mode of the calc, where it still ddoes normal damage to vehicles. This means that you get 1 point per calc click in debug mode. Try it, it's a fun way to get 500+ points without doing hardly anything.
i used to try to get to those caps, and at one point would do quite efficiently every game then i started contributing to the team again