it's literally the EXACT SAME MIX but the bass is a little louder, and that little gleaming synth in the back during the chorus is a little louder. Taylor is a little further back in the mix than she was on the original, which is i think why i've heard her performance called 'phoned in,' and she doesn't clip the top of the audio during the 'OH it's been a while...' anymore. personally, i like the mix on the rerecording better, because as i always say, more bass can fix basically anything. if you don't believe me, just go listen to it in a car with good speakers and the bass turned up a bit, you'll see what i'm getting at.