OMG, that's got to be the dumbest poll I've ever seen, and whoever created that should be beaten to a pulp.
No one ever disputed whether Roy Thomas took the Speedo-wearing, caveman Him and used that template to develop the new superhero Warlock, just as Greer Nelson is both The Cat and Tigra, only that the transformation is so severe, that Him does not resemble Warlock is any tangible way.
They just took Him as the clay for Warlock because of copyright issues, and wanted to transform a character they already owned. Warlock was its own unique concept.
Tha'ts not really correct. Roy Thomas chose to use an already existing character because he didn't want to lose the ownership of the character if he created it from scratch.