Most hardware-specific performance optimization comes from choosing algorithms that are better suited to that console's architecture, not from "coding to the metal," as people like to call it. When both the PC and the consoles are both running on x86, a lot of that performance advantage disappears. People who are used to console hardware performing orders of magnitude better than the equivalent PC parts are going to pretty disappointed this gen. Remember, all this ease of use and architectural simplicity that Sony and various developers are bragging about won't come without cost, there's no such thing as free performance.
