Not really. Positional cues are the same on both. However the standard pads are thinner sounding, and bass isn't as full, so it's easier to focus on the mids and treble (most important sounds). Think of It like my comparison of the AD700 vs K701. The AD700 is even thinner sounding and bass shy, 2hich is what makes it so easy to focus on detail.
If you want to strictly sound whore, just get the AD700.
I would totally agree with you if I didn't already own that too and absolutely hate the comfort and fit of it. I've quite enjoyed my K702 and haven't noticed much, if any, compromise with competitive gaming. I'm sure the Annie will do quite nicely as well.