Interesting article in the latest issue of Bicycling Magazine if you have not read it. One guy broke his neck in two places when his counterfeit handlebars snapped on a fast descent. Hit the link below and scroll down to the Ken Avchen story for that discussion.
As Jerry Merkey said to me in an offline conversation, even "genuine" parts need to be assembled and used properly and instances of good stuff breaking are in the record. Malformed, improperly assembled, crashed, or poorly constructed stuff is not worth the risk of a brutal crash.