Many Generals and divisional history compilers with the same excuses:
'We were heroic defenders of the German people'
'Overwhelming Allied material'
'Allies too cautious and slow, could have destroyed us any time if they were us'
'We were individually superior to the Asiatic, mongoloid Russians that were bound to the land and acted as with herd instincts'
'We were never beaten in a 'fair fight''
I also don't buy into the idea he was strategically inept, plenty of Generals survived to write self serving memoirs that basically set out to say:
...And..of course, it was 'all Hitler's fault', General Mud and General Winter beat us, not the Red Army or ourselves.