Rudorffer got shot down 17 times.
Rall got shot down 8 times.
Hartmann had to hit the silk/ground like 2 times, but NEVER lost a wingman, - which is impressive.
None of the German top guns had THOUSANDS of missions. Something more like 1000 to 1500 hrs.
Pat Pattle had 50 killes, - therefrom many in a biplane. He got shot down once AFAIK.
Johnny Johnsson did not get shot down.
My old friend T.E.Jonsson had some 1200 hrs in WW2, with mere 9 kills. He most likely never even saw as many enemy aircraft as Hartmann shot down. He did not get shot down. He fought on as a cargo pilot in the Nigerian/Biafra crisis (60's), and did get shot up badly in his last mission, although he got through it unscratced, - 400+ missions in a freighter over enemy territory, getting shot at by flak and intercepted with Migs.
So, who is the best of all aces? I don't know. There were many good, that's all.