The Luftwaffe side's bulk of points comes from knocking out and damaging cities. The impact on the score of knocked out radar/airfields is not that big, I feel.
And speaking statistically the repair rolls don't generate that many repair points.
The deeper strategy/tactic here would when and where to lend repair support to other groups.
Interestingly, I've always felt that Battle Cry/Memoire '44 relied a lot on the luck of which command cards you draw. Not so much on the roll of the dice.
Read the strategy and tactic guides . According to the author, the cards aren't nearly as big a factor as many people make them out to be. It's all about building a hand and card management. What many (beginning) players tend to do is play the strongest card right away, possibly without having any follow-up cards.
Of course you do have extreme cases and the shorter the scenario, the bigger the role of the initial cards drawn will be.