A good work place environment is easily worth $10k in salary. If a manager were up front with me - "Hey we pay everyone the same rate, and everyone else makes this much. Still interested?" - I would consider that to be a good sign.
Sounds great that we all make the same until someone is working harder or less hard than someone else, then it will be a sore spot.
If I create a lot of value, I want to be able to capture a portion of it in my salary. I don't want to capture some average wage determined by a manager who doesn't have the guts to admit, even privately, that some people create more value than others.
With this article and the one yesterday I am going to assume that in any salary negotiation the other guy is trying to cheat me, so I would just ignore that.