those are rather different. speed/climbrate charts were available in all the period pilot notes Ive seen. when captured aircraft were available, speed/climbrate charts were also available.
Ive never seen a chart of exactly how many rounds in which exact location were required for different amounts of damage. although I'm certain that tests were done on friendly and captured equipment and tactical desicions were passed down to frontline pilots based on them (lw live-fire tests on captured US buffs springs to mind.)
the speed/climbrate charts were based on repeatable tests, quantitative, and widely distributed.
the data being asking for were almost entirely anecdotal, qualitative, and not widely distributed.
thats why I think it should stay anecdotal

edit:
I can see why the information would be interesting and useful but I think it would be a bad idea to release it etc.
agreed, a little mystery is a good thing, the game (like the real thing) should be more than just a number-crunching exercise
