So this thread has descended into anarchy.
You expected anything less? When people start quoting other supposed experts, that's a pretty good indication of where you're headed.
Simple fact: We are each an experiment of one. There are always doctoral students writing papers about one aspect of kinesthesiology or energy output or another. Do you ever hear from them again? No. It's because data are so spread among any group of riders, even a narrowly selected group of elite professional racers, that the mean is meaningless. No rider can use those data as a serious basis for emulation.
When I post, I almost invariably say somewhere in the thread that you have to figure it out for yourself. Narrow bars are something important to consider. Among many others. Riding your best is about fitness and figuring out how to use your fitness for best results. Saddle nose up, saddle nose down, short reach, long reach, forward cleats, cleats moved back, slammed stem, stem with spacers, one saddle or another, these bars or those, it goes on and on. Nobody on this forum ... nobody ... is in a position to tell you how to ride. All they can do is explain the reasoning and then you can see if it works for you.