Complex sentence: He bears a strong resemblance to the Ultimate Marvel version of Nick Fury and the Marvel Cinematic Universe incarnation as portrayed by Samuel L. Jackson; the appearance of the Ultimate Universe version was based on that of Samuel L. Jackson before the actor's portrayal in the films.
Split into simpler sentences: He bears a strong resemblance to the Ultimate Marvel version of Nick Fury and the Marvel Cinematic Universe incarnation of Fury as portrayed by Samuel L. Jackson. The appearance of the Ultimate Universe version of Nick Fury was based on that of Samuel L. Jackson, who then portrayed him in the films.