only got 25k RP (w/ premium acc) from 9 kill and 14 min of play time
while got 31k from effortlessly bombed 6 base and 22min play time
this happen because play time massively affect RP gain
it’s impossible to get long play time for more RP if not bombing
because getting kill eventually will eliminate all enemy and it will end the match
while bombing base will not end a match and base also respawn unlike planes
therefore RP gain from kill should be doubled or 50% more to compensate play time