It's very important to distinguish things said in a rational tone from rational words. this is how the politicians and imitators gain power and influence in organizations. Look at the mechanism of the thought in the words that they say. Does it function?
Notably, the majority of both professional philosophers working now would likely say that, in essence, there is no difference between the two. But I suspect that they've just exaggerated their notions of essence in order to disagree with the concept of essence. Much as people exaggerate their notions of God in order to create something in which it would be much easier not to believe.