Ah, I misread it. There's a very good chance you're just seeing the development engine that has very little optimization since ports are usually an afterthought

Ah, I misread it. There's a very good chance you're just seeing the development engine that has very little optimization since ports are usually an afterthought. Either way they're very different environments. For instance you usually have a unified memory model on most consoles where on PC you have to shuffle textures across a memory bus to the GPU. Leads you to optimize for different things(although most ports I know of were done with a skeleton team).