From: Iowan in MD/DC
I think it also depends on which version of the game you are playing. It appears, though I do not have enough experience to be certain, that the new Beta increases the severity and probability of uncoordinated strikes from large CVTFs for both sides. Also, the special KB advantages for Japan in 1942 have been removed in the Beta, of this I am certain, and using more than 300 planes in a CVTF for Japan in 1942 now certainly does increase (indeed almost guarantees) a disjointed strike.
As far as I know, there are no changes to this in the betas.
Also, Japan never suffers from the "penalty" until having 200 + random(1-200) aircraft in the TF. So there's a chance of having a double-chance at 201 aircraft... but most people just say 400 because that's when it kicks in always. It would be roughly 50/50 at 300 aircraft.
But as has been said many times, the penalty is minimal and it's really a no-brainer decision to include as many ships as possible unless you care about being spotted more easily.
I know that nothing has been said about it, but I am playing a couple games right now with the Beta and without, and I am seeing many more problems in strike coordination from large CV groups with the Beta than without.
Also, there have always been additional bonuses in place for Japan's strike coordination in 1942 for KB beyond those given in the rulebook. That is one reason Japan had always been able to launch perfectly coordinated strikes at Pearl, for example. No longer. With 6 CVs in a TF, I am seeing on average about 2/3rds of the planes coordinated on a strike, whereas before it was always near perfect in 1942.
Have you tested it rigorously? There should be no difference, although they may be affected by a very early change that had to do with large strike coordination. Very early. At this point, that should be included in the latest official patch.
And no, Japan's strike coordination in 1942 is no different than in any other year.
I've launched several strikes in the past few months under the near-latest beta (long after that very early change I mentioned) with 700-plane KBs and not suffered from it.