Re: I always feel safer in Boeings than Airbus.
The rudder in question exceeded the certification requirements, and the NTSB tested the composite materials because the rudder had suffered a delamination problem before it was first put into service. American Airlines were number 2 on the hitlist because they weren't training their pilots good recovery techniques in simulators. If the co-pilot hadn't been kicking the rudder back and forth, the aerodynamic forces would have stabilised and the accident would never have happened.
That said, Airbus also get a dishonorable mention as the A300 had really sensitive rudder inputs with a pretty limited amount of travel to go from hard left to hard right. (A300s and A310s used "real" flight controls as opposed to fly-by-wire systems). There were also 10 previous incidents involving rudder overstress with that particular aircraft, which suggests a bunch of overzealous pilots or that the rudder was oversensitive.
Report is here ..
With all that said..... Given that most airliners from Boeing and Airbus now use composite materials, it really doesn't matter what you're flying nowadays - it's likely to be some sort of composite you're sat in! And airliners such as the B777 use graphite panels as their rudder panels, so clearly Boeing also see merit in using composite materials for flight controls.