Not sure about the origins of the Me-262 and Bf-109G.
They are both owned by the German Messerschmitt foundation, but I think the Me-262 was originally one (of two or three) assembled in the US and using P&W J85 modern jet engines. One was later sold to the above foundation.
The Me-262 in my Berlin Airshow photos has the same registration number as the one in the wikipedia picture (501244).
I believe when you are referrring to the Flugwerk project, it is a separate German FW-190A project ...
Unfortunately I did not see any FW-190 at the ILA Berlin airshow.