Allan,
The link Alexis provides contains three entries where he downed an enemy aircraft. The RFC/RAF used the number five to confirm "Ace" status. I checked my favorite reference and a highly respected one at that, "Above the Trenches" by Shores, Franks, and Guest and Tone Bayetto is not included so I'd say he was not formally qualified as an Ace.
As an aside I'll add that the foregoing does in no way reduce my admiration and respect for him; the conditions these men endured and their sheer raw bravery in going to war in these primitive machines make them very special in my view, what a generation! Why not submit your Build as a "Display and Commemoration only" entry?
Cheers,
Lance
