Honestly.
They specifically say in their analysis that Taylor isn't on the ballot, yet they don't have a Roberts vs. Orman average.
That's probably because RCP has always been a Republican-leaning publication. Almost half of all articles they're linking to are science-denying far right propaganda articles. Not to talk about Sean Trende, who happens to seriously believe that a Republican presidential candidate would easily win even if every single Republican in the US were obliterated from the face of the earth. That's how serious RCP is.
There isn't really a point for RCP anymore, too.