I don't see how you can say he hasn't lost range/technical ability. It's clear as day when you compare his power in the higher registers back in the 80's/90's to how he clearly strains and loses the resonance today when he tries to hi the same notes in the same key/register. He's lost a lot of ability in certain areas and that's totally understandable. No singer can do at 60 what they did at 20. You have to evolve. He's done a fantastic job at maintaining 80% of his vocal catalog but I feel he does need to drop some of the high stuff down a half step.I think Bruce is singing as good now as he ever has. The tonal quality of his voice has changed but the talent hasn’t diminished one bit.