To me this clip actually demonstrates how little technology does for us cuz to the tone he has in that clip is absolutely killer including the wah bit. I could probably tweak for days in 2013 to approach getting close to that tone was 45 years ago.
Just goes to show you technology can't replace what's coming from someone's hands and mind. I'm sure Clapton could play through the crappiest practice amp available and still make an awesome noise.