Watch this cool video where a Demon drag races classic muscle cars, including a 1972 Challenger and a 1968 Charger. While the Demon ran exceptionally well and turned high 9s, there were some classics that gave it a run for its money, like the close race with a 1970 Hemi 'Cuda (at the 4:54 minute mark).
These are always enjoyable to watch even though you never know for sure what's been done to the 'classics'. Obviously it's quite a bit or the races wouldn't be close.
The driver of the Demon doesn't have much better reflexes than I do. I lost a bunch of races coming off the starting line. And won a bunch of races with pure horsepower at the finish line.