Willi Steinmann and IAR-80A white 109

[PMoz99]

Steinmann was "exiled" to Romania after shooting down his GrK on 1/6/43.
The Wings Palette website has a profile of an IAR-80A which is captioned as having being flown by Steinmann. A date is not given.
Osprey's Romanian Aces of WW2 has a photo of Steinmann and others including Romanians at a briefing on an airfield with IAR-80A white 109 and others in the background. The text suggests the briefing was fictitious and for propaganda purposes only, and cooperation between the Germans and Romanians was rare.
I'm inclined to agree with Osprey and conclude that whoever came up with Steinmann as a pilot of an IAR-80A added 1+1 and got an answer of 5.
Can anyone add anything to confirm or refute this?
Thanks
Peter