Honestly I think Brubaker and Fraction are a little overrated. The art did so much of the lifting for a rather well written story built on some pretty basic ideas. The Iron Fist legacy just isn't that remarkable aside from Randall being cool and it being a storytelling engine for filler material.
I'll have to re read Swiercynzski and Andrews but they both did well in the shadows of the other work. Brisson's comic was a lot of fun.