" I'd say they held their own just fine"
getting wiped in sales recently -
From MRO Network......
ATR,has a backlog of 250 aircraft—mostly for the 68-78-seat ATR 72-600, while Bombardier has only 31 orders left to fulfill for its slightly larger Q400 turboprop.
In-service numbers also support ATR’s dominance: Aviation Week’s 2017 Commercial Aviation Fleet & MRO Forecast estimates a global ATR 72 fleet of 921 aircraft in 2017, versus 539 Q400s. By 2022 there will be almost 1,300 ATR 72s in service, Aviation Week predicts.