For me its completely clear...
The fact is that
LvR did identify the victim he brought down as "Capt Ball" in his victory report. LvR also landed nearby but we dont knew for certain that he "investigated" the victim directly...it does not exists any other German claims for this victory...
So whats the problem...?
The fact is for a confirmed German victory, it do not demand that you actually hit the enemy crew or even hit the enemy aircraft...
However, Mike W is correct that it was Sopwith Triplanes in the area the right time...BUT...there were also British Spads fighting in the area...
Those who dont understand that mis-identyfying of enemy a/c was more a rule then an exception ought to read a lot of more original material...
For the Germans, how could they identify (in the best of cases) an enemy a/c (SE 5) which they did not knew existed ..?
Gunnar