I wasnt going to mention it, its only against the AI, but my Beaus' defend Darwin and I have 3 aces with 30+ kills, mostly bombers.
In my PBEM my Beaufighters haven't done very well at all against Japanese fighters and so far he hasn't done much bombing of N. Australia. My Beaufighters have done a bit better when they had the altitude advantage (against fighters). But why would they do any worse when they're AI controlled than not?(unescorted bombers)?