Erich Hartmann vs. Bob Goebel

I finally broke down and bought Tamiya's 1/32 Mustang.  I did it with the intention of building the "Flying Dutchman", the P-51D flown by Bob Goebel of the 31st Fighter Group.  I just finished reading his war memoir, Mustang Ace and it was a very good read.  I came across Goebel when reading Five Down And Glory which gives a complete listing of America's aces.  I wanted to learn more about some of Wisconsin's aces (my home state) outside of Richard Bong, and I came across Capt Goebel. 

Anyways, to get to the point of this thread, I came across something quite interesting after finishing up his book.  We all know Erich Hartmann was the ace of aces with over 300 victories to his credit, and all the mainstream sources claim Hartmann was never shot down once.  He did however, make some bailouts, one of which came during a July 3rd, 1944 mission over the Rumanian oil fields to intercept B-24s.  It was some of Hartmann's first action tangling with Mustangs, and after he ran out of ammunition he was jumped by a Mustang from the the 31st FG, which happened to be Goebel's P-51B.  Hartmann claimed he bailed out after running out of fuel trying to run away from Goebel and during his fall to the ground, Goebel made a pass close by to shoot him with his gun camera and to salute him.  This is what you will find in most sources.  However, Goebel's account of that day is quite different.

From the book....

"I spotted two Me-109s above at about one o'clock.  I think the leader saw my flight about the same time.  He had balls, I'll say that for him.  The two 109s started down to attack the bombers below or the four of us; it was a rash act indeed.  Perhaps he had recently come from the Eastern front and had no fear of Russian fighters, but we were not the Yaks or Migs he was used to fooling with.  We broke into them.  In thrity seconds he had realized his mistake. ......I tried to follow my man but I didn't have enough speed.  In military emergency power, I just managed to stagger over the top of the loop, but once I got the nose down I accelerated quickly......Now I began to close the distance.....I stayed slightly low in his blind spot.....the German continued his descending, high speed run.....Now the 109 almost filled my sight.  I had to be in range now!.  Surely I was no more than 200 yards away.  I had the pipper low in the center of his fuselage when I squeezed off the first short burst.  No strikes.......Quickly raising the pipper almost to the tip of his tail, I fired again and was rewarded this time with strikes quick-flashing around the fuselage and wing roots.  then his prop wash thew me off momentarily.  Before I could get the sight back on him for another burst, the pilot left his airplane......putting the gun switch in the Camera Only position I made a pass at him, being careful to break off so my slipstream would not collapse his canopy.  As I passed to the side of him, I raised my gloved  hand in a half wave-half salute and then reformed my flight.....the latest victory brought my total to four."

So, has anyone else looked into this before?  Was Hartmann really defeated by a 21 year old Wisconsinite?  I like to believe Goebel, but it still seems like a sort of mystery.