What lute said.
Flying for rank is boring snoring. Anyone can do it, anyone can get into top 100 of rank in 2 days. But, it takes a variety of stuff. Some GV runs, lvt capture of a port or V field with a kill is the best. ie if you can get someone to auger after you ping him twice so you are awarded the kill, thats golden. Then go on & get the capture. I never bothered jumping to bomber for the capture. That always seemed just a smidge too lame.
Then run a bomber run or 4 to a enemy strat target. Training is best, ju-88's and lancs are good.
Then its time to do some attack runs, need to kill some objects, barracks, fuel, city, etc, get a vulch or 3 and go home. Be careful, don't die.
Rinse and repeat as needed. And after a couple of months of doing that you too may be ready to say. "Rank sucks and score is meaningless"