GP vs Repair

Hello there i am here on crossfire about 2 weeks and i have to complain about the GP earnings. What i want to say its that the GP we earn each match depends on score or something but take a look in games i earn about 250 GP and 340 exp etc and my repairs are like 220. Which means 250-220=30 GP is what i earn and i think that this is not a good balance between the repairs and total gp we earn so i would like to know why is this happening or can you increase the gp we totally earn or decrease repair or no repair at all! lol the last one i am not sure how the people will judge it but thats all i wanted to say.