I have to disagree to the highest extent. Not many people outside of Xbox/Halo/Gear fans even know who Arbiter or this General Raam guy are. Jason and Leatherface are iconic characters. Jason and Leatherface are pop culture status. Even if not everybody knows them by name or has seen their movies, people know who they are. On Halloween when every little kid is walking around with a hockey mask, we all know who that is supposed to be and who made that popular. Leatherface and TCM are iconic too. He more or less made the chainsaw and Halloween/haunted houses/hayrides synonymous with each other. Not to mention Leatherface was one of the forefathers of the Slasher sub-genre in general.
I know Jason/Leatherface vs Arbiter/Raam is subjective and is pointless to really talk about since people like what they like, but I love my slashers and I gotta stick up for them XD