I don't know if I agree with that entirely - there are surface similarities, but like Monk, he is damn near impossible to imitate. I fail to see, for example, motivic similarities between Cecil and say, Alexander von Schlippenbach, Irene Schweizer or Matthew Shipp (admitting not as much familiarity with Shipp as with the others). Not just in terms of solos, either, but the way Cecil would feed structural fragments to Jimmy or Ramsey Ameen or Cyrille or Oxley is quite different than a lot of these other players work.
But that's probably for another thread , I'd still like to see this film even though I don't have Comcast.