I agree with the above. Damaged aircraft aren't counted as intuition would lead you to suspect. Intuitively, one would assume that '10 planes shot down, 25 damaged' means exactly that-10 a?c downed and 25 damaged, it isn't so in this game. I can understand it somewhat in A2A combat, as the fluid and hectic nature of aerial combat could easily lead to multiple pilots claiming to damage the same A/C several times, with one (or more) claiming the A/C as destroyed. Somewhat harder to believe is that bombing missions are treated the same way. Damage done to a/c facilities on the ground was generally not attributable to any individual A/C, instead post strike photos would reveal the overall effectiveness of the strike, and allow for a more accurate accounting of the damages inflicted. Naval bombardment kind of falls in the middle of the two, since it could be difficult to tell who fired what particular shell on the target, especially with multiple ships involved in the attack. A night time bombardment should yield little intel at all IMO, as other than secondary explosions and the uneven lighting from star shells, they was no way to truly tell how effective a bombardment was.
In general I feel that the level of intel given, and the accuracy of that intel, is way to high. While A/C immediately destroyed over a friendly airbase are fairly easy to count, any A/C lost pre or post strike would be hard to determine accurately, especially in the pacific where the downed A/C could sink and disappear. One other annoyance is that you generally know exactly which ship you are attacking as you attack it, by name. I'd prefer a report saying 'D3A val dive bombing Yorktown Class CV' than 'bombing USS Enterprise'. Or '1st Marine Div attacking enemy 5000 enemy troops' rather than specific naming of the exactly what troops down to their type. That's probably just me though, and I do understand that it's a game.
One thing I do when analyzing Aircraft damaged reports is divide the number by 4. So '10 betties shot down and 10 damaged' becomes '10 betties downed and 2 damaged' With Japanese fighter armament being what it is you may even want to use a higher integer, especially against 4E A/C. Maybe something like 6 or even 10 if they are attacked by Nates or early oscars. Just my 2 cents, regardless it is a damned depressingly effective bombardment to be sure ;)