I tend to agree with Del there.
Interesting to ponder though.
IMO the skill has DROPPED. You take any 2-weeker and stick him in a spit16 and he can STILL get multiple kills with no skill and repeat the process.
In tour 24 you didn't have this crutch. To do the same in any other spit would be the Spit5 or Spit9, both of which are slow as hell compared to the 40mph-faster Spit16.
In Tour 24 newbies might be able to run, or might be able to turn, but now? Now they can outrun and outturn almost anything they encounter (oh, and let's not forget outclimb, out accelerate, oh yeah and outroll!).
So, if we get this new, super, wonderful, crutch of a plane that catapults any loser into "ace" status, but the averages remain the same, I posit that average skill has DROPPED, but with newer easy-mode additions to the planeset, this inflates the numbers higher than they'd be if folks were pushed back in time into Tour 24.
Oh, and Wrongway: They may not have had a "bubble" per se, but it's what folks called it. The hit detection was fubar through all of AH1. 1.2k definite kills were the NORM. You weren't safe until you passed 1.5k in front of somebody. Keep in mind historic combat ranges were often 250 or LESS. Some spit aces liked to get in under 150 yards. 300 yards was considered "out of range"... So yeah we had a "hit bubble" in all but name, so folks used the term.
EDIT: That's more food for thought there!! If the numbers are eerily similar, but the skill required to get in and land hits on a plane has grown exponentially with the new bullet/hit detection models, that would imply skill has RISEN!! See how fun this is? So maybe the hit detection and the spit/UFO flight model cancel each other out? Heh heh heh, the options are endless.