I'm not playing now either, but from prior experience I know that .303's and small caliber guns like that suck hard against other planes. Ever try to take down an enemy plane with the dual .30's in a TBM? If the guns were aimed right, like at the engine/cockpit or possibly the wing-fuselage merging area then yes you could take down another plane. Iv'e stated that, but you say that you have done it successfully (Meaning only moderate damage done and no loss of a drone) in a Ju-88 and a G4M. If you have a dual .30 cal and you're shooting at an enemies engine from 600 yards away and hes pounding you with 6+ .50 cals or 4+ 20mm's do you think you'd win that fight at that distance? Even if you do manage to knock out his engine the superior firepower and range will kill you before you kill him (provided the enemy knows what he's doing.)
Yeah. I used to be a pretty good shot with the bomber guns. Start shooting at D1000, you get hits on the cocpit, and by D800, you can have them limping off with a PW or engine damage, or even be rewarded with that satisfying explosion that marks a kill.
I called you kid, because you're refusing to accept that 1) 7.92's can be effective if well-manned, and 2) the He-111 is not significantly worse than the B-25. You blatantly ignore all evidence saying you're wrong, and the word of everyone who has played longer than you. Generally, you are acting like a child. And if 16 is 2 years older than you, then you're 4 years younger than me. Considering that would put you at 9th grade this year, yeah, theres a fairly significant difference in age and experience.
Luck exists. Why? The projectile trajectory is randomized slightly. Since you can't perfectly predict where exactly they will go, that introduces some element of chance. Thus, you can be lucky. On top of that, a difference in aim point so small as to be nearly unnoticable can be the difference between hitting the pilot, and putting a bunch of holes in the plane all around him. So, yeah, luck definitely exists.
Now, do lucky charms, and bad luck from breaking a mirror, and crap like that exist? No, but thats an entirely different subject, and is only tangently related to luck in the sense that we're using it.
And finally, yes, skill makes up a larger component than luck, but skill is most likely beyond you.