'Colgan 3407 experienced an erroneous stick shaker too'
No it was not erroneous - the system operated exactly as it was supposed to.
It was the inability of the crew to correctly fly the aircraft for the conditions they were in.
A lot of talk about stick shake / pushers being bad - wrong. What is bad is people not learning about and flying correctly their current type of aircraft. That involves learning about all the differences and special procedures (inc ref etc)