I suggest Don Caldwell's 'JG 26 Top Guns of the LW'
as a reasonably well researched/accurate appraisal of the situation..
As he notes.
Resistance was put up by the LW & cost the Allies - right to the end..
& Clostermann wrote [P.166, The Big Show],
"All in all the average standard of German fighter pilots was much higher at the turn of the year '44-45 than at any other time since 1940"
"...the heroic band of 'the old stagers' of the LW, the real veterans, with 3 or 4,000 hours of flying.
These pilots trained in the school of the Spanish Civil War, survivors of the successive campaigns of the LW from 1940 onwards, knew their job inside & out, with all the refinements. Both prudent & sure of themselves, masters of their machines, they were very dangerous."