Might not be a fair comparison. There are different types of single triggers, and the safeties used to actuate them.
My O/U has a single trigger, a non selective version. It has acted up twice, once when my Father had a recoil pad installed, and once when it was simply dirty. The recoil pad, as installed, was too soft to let the inertia mechanism work. When the pad got older, and harder, it resumed working correctly.
It was most of 50 years time between these two incidents.

Not a single trigger guy, incidentally. But, the Beretta O/U allows for gloves to be used.

Best,
Ted