Stephen made a good point that no one has taken the time to verify (not saying it’s true or not true) but if you went play by play do you know that it’s not new stuff? People are judging the plays based off if they used exotic motions or new formations. Since no one saw those and they didn’t have 80 yard bombs or 10 sacks, people assume it’s the same.
The blocking and route concepts could be very different and defensively, the way the DL is attacking we know is from a 1-gap to a 2-gap. I’m sure there are coverage differences also. There are changes that basic fans and media just don’t know enough about myself included. If it doesn’t involve what the QB does, via bootleg or calling a bunch of shifts, we really don’t know.