My current model says that “Sundance” is a composite character with very good editing. Also, I do not believe there is only on “Tyler Durden”.
I had no clue who Tyler Durden was. Had to look it up.
“Tyler Durden is a reference to the lead character in Fight Club. It’s the pseudonym for Zero Hedge’s key author(s) used to hide their identities.”
http://www.businessinsider.com/author/tyler-durden
You may well be correct on Sundance. Regardless of who he is, he or they are very good most of the time.