Umm.
"There were no FW-190 fighters in the theater.
The only fighter unit in the theater was escorting SKG 10. "
There were 190's in Sicily as we know.
There were also 190 ground attack aircraft right?
We know some bits of what did happen, but we have a lot of bits that we don't know about.
That's the headache of the whole deal.
So, I'd take that with a grain of salt, that's all.
BTW, I belive that Stuka was properly marked to StG77. The museum tried to find out about where it belonged to, and came out with the eastern front.
I tried here:
http://www.ww2.dkand came out with the eastern front.
So, missing papers, or whatever the cause, what was registered was wrong. It took a whole wreckage to discover it though.