I would agree it's not an RS though.
i'm sure the later cones had cosworth badges?
Nope - the Granadas had Cosworth badges but they were dropped from the Scorpios to try to bring the insurance costs down (the owners of Sierra's and Escorts were being careless twats by leaving them in dodgy places and letting people nick them). The Scorpio Cosworths still had all the other Cosworth additions though - bigger brakes, traction control (in place of an LSD), stiffer and lower suspension etc.
The whole "it's not a Cosworth" as dojj points out is just snootiness.