Kevin: While I don't doubt your statement about peer acceptance, the Sayeret Matkal has had a pretty good track record, including Entebbe--an operation that helped to lead to the formation of our own military anti-terror/hostage rescue units. That doesn't mean that I would accept their training methods as being superior (one thing about exclusive units is they can develop a "not-invented-here" tendency over time) but from the start it has shown the ability to not let conventional wisdom stop it from carrying out truly extraordinary actions.
Over the length of its existence, it probably rivals the British unit on the number of extremely difficult ops it has carried out successfully (constantly being at war does that) though my guess is that over the last 13 years the American units have come much closer to evening that score.