As I pointed out, there is no problem with TR authority - it is just the response in some wind conditions that can catch people out.
At High AUM and high power (ie full of pax and in the latter stages of an approach in gusty wind conditions) some pilots might be more reluctant to 'mash' the pedals than others.
It may not be a factor in this sad accident but we will have to wait for the full NTSB report to find out.