My point for making my earlier posts was this....you cannot understand the full extent of the forest, by looking at each individual tree. The individual tree analysis comes later, after the general trend is observed and understood. In this case, the "forest" is what happened to the LW overall. The first thing is that the LW lost. The second is that it suffered a lot of losses to get there. On this point it cannot be pinned down exactly, because the primary records are not complete any more. However, it is a lot (I will try and get back to that point later).
Now getting back to the USAAF, the first thing that one can observe is that they won, and by a very wide margin. The second thing is that whilst the USAAF achieved local superiority again and again (per KKs post, which I pretty much agree with), the overall superiority in numbers is largely a furphy. The USAAF started 1944 with 33 combat groups and finished it with the same number. And the combat experience of its flyers increased from somethng like 300 hours at the beginning of 1944, to well over 500 hours by the end of the year.
By contrast, the German experience dropped dramatically, from around 166 flight hours at the beginning of the year, to about 100 hours at the end of the year. The reason for this was because the training schools just could not keep up with demand, and when you look at the output of the schools, this means that German losses for each month have to be running at above an average of 500 pilots per month. Actually I strongly suspect that the number is closer to 700 per month. So whereas the aircrew losses for germany must be running at around 6-8000 for the crucial year of 1944, those of the USAAF are 1734 (ETO MTO, fighters only). Now, when the numbers are pretty close to evenly matched (in late 1944, the germans still had roughly 1900 fighters in the reich defences) and the germans are still flying aircraft that are competitive in performance, and the sortie rate is climbing again (indicating that they found fuel from somewhere), but they still lose something like 28% of their fighters in a single month (November) then the only explanation can be that German pilot quality had fallen through the floor. Add to that the fact that the number of sorties flown for every fighter loss in the USAAF had more than doubled in the year, and the conclusion becomes inescapable, by late 1944, the experience pool of the LW had collapsed. As far as I can tell, there just isnt any other explanation that is plausible