I have GC2/7 claiming two Bf109 and two Fw190 on 14 April. The first victory is by Capt Jeandet who appears to be the actual victor although his wingman does follow him in the combat. The Fw190 fell near Urach (Bad Urach?). The other victory is a Fw190 shot down into a forest where it crashed and burst into flames (location Herrenberg) by Gleize and Girard. The account does mention another unidentified Spitfire making an attack therefore this could be the same Fw190 shot down by Jeandet. Gauthier then claims a Bf109 which crashes at Erbach (probably Herrenbach). The fourth victory is a Bf109 shot down by Sgt Habert near Ulm. (Source: "Pilotes Francais sur L'Alsace et L'Allemagne" p.556-559)
We could be looking at double claiming but this would not be unusual. The French pilots initially identify thir targets as three enemy fighters and therefore to shoot down four seems...unusual
regards
Keith