Unfortunately no. The 'professionalism' of the German Army decreased a lot after the battle of France due to having to establish something like ~50+ new divisions for Barbarossa, and with the doubling of the number of panzer divisions.
From experience reading in 1941-1942 the officer/nco cadre was still acceptable with Barbarossa seeing the peak standards, but from 43 onward the proportion of trained leadership/specialists to raw recruits in divisions declined dramatically, often by 50% or more. The majority of officers/ncos were only reservists.
Do you have any evidence or sources that can prove your thesis?
I mean, the reason why there could have been a possible lack of "professionalism" could be the result of changes i. e. in the officers training courses, instructor corpse with only theoretical knowledge in the end of the war, contraction of the education of NCO´s, and so on...