There’s honestly no way for me to compare. While the actual distance might be equal, less, or more, the surroundings are completely different. My general sense was that EVERYTHING seemed to be right on top of the field. The new stadium is very, very tall when you’re standing on the playing field.
I attended the Giants game the next afternoon following my tour. (I doubt you’ll ever get a more accurate side by side comparison.) My takeaway was the existing stadium feels way more open and the stands are much shallower. If anyone’s ever been to the Rose Bowl you’ll know what I mean. When you sit in the Rose Bowl you’d swear there’s no way that it holds 100,000 seats. It’s extremely shallow and completely open to the sky.