A further look at the action on 27 May 1944 shows:
Reported/admitted losses from II./JG 53
Uffz. Hans Häussler: Killed, Shot down 3 km north of Gérardmer (~50 miles SW of Strasbourg)
Uffz. Uff. Arnold Sottopietra: wounded and baled out, shot down near Gerbépal (~50 miles SW of Strasbourg)
Three other 109s lost - pilots not named.
Reported/admitted losses from II./JG 27
Lt. Fritz-Joachim Frhr. von Buddenbrock: killed, emergency landing near Erstein (~ 6 miles south of Strasbourg), shot at ground level.
Fw. Rudolf Philipp: killed, Lavolline (~ 50 miles SW of Strasbourg)
Uff. Waldemar Kronenberger: killed near Gérardmer (~50 miles SW of Strasbourg)
Three other 109s lost during comabt - pilots not named. Three additonal losses recorded as operational losses not due to enemy action.
The 357th Fighter Group claimed 15 Me 109s destroyed in the Strasbourg area. The 352nd Fighter Group claimed 12 Me 109's destroyed, most around 40 miles south of Strasbourg.
I don't think that Anderson shot down Buddenbrock given the nature of Bruddenbrock's demise. In my opinion, the most likely candidates for shooting down Buddenbrock are Fairweather of the 357th and Thornell or Moran of the 352nd, as thier kills involved Me 109s on the deck.