So far as using them for basis on how one compares to another... ^^Yes that is true. I just don't like the idea of saying that one graph is more accurate than the other like what acix was saying.... Until there is a real standard of measurement that totally translates to the exact thing we hear. The goldenears graph has the right idea for the k702 though. Even though I didn't see that I would draw the graph myself to be like that by ear.
Yeah, I would also draw it differently but it very roughly shows what to be aware of... Still, I would rather trust Headroom, innerfidelity or changstar for graphs comparison.