Marseilles also on occasion shot down more enemy aircraft on his own than were shot down in an entire theatre of war - massive skills
As for his lack of Bailing out skills and not being shot down.....
He was shot down once during the BoB probably by Robert Stanford Tuck of 257 Sqn RAF (Hurricane) and spent 3 hours in the Channel before being rescued by a He59 (he got a massive bollocking upon his return as he had abandoned his Wingman who was subsequently killed that day - in order to go hunting)
He was also shot down not once but twice by the Frenchman James Denis of 73 Sqn RAF (Also Hurricanes) in the desert in April and May 1941 - the first time hitting the cockpit and canopy of Hans-Joachims plane with a good burst that the German was very lucky to have not been hit by.
All told he was a remarkable man and great pilot (maybe a bit careless and he wrote off a number of airframes!) and despite being the in the business of killing people he often displayed great humanity in attempting to locate and rescue downed allied pilots in NA and also going to great lengths in informing the British about the condition of downed pilots.
His death was probably as much due to extreme combat exhaustion as much as it was a damaged differential gear.
And JG27 and its superstars was an odd setup that was bound to fail as a unit (and didn't like tackling bombers for some reason!) once the Superstars were all killed (around about the same time that Spitfires arrived in NA - coincidence?) - its morale was so badly shaken by these losses that it had to be withdrawn.