The Bengals are 5-2 in the playoffs with Burrow at the helm, with an AFC Championship and a 23-20 loss in the Super Bowl to a really great Rams team.
The Cowboys are 5-16 in the playoffs since 1996 with no NFC championship game appearances. They're looking at a rebuild and potentially replacing a QB in the very near future.
You do the math.
I didn't bring up his age. You did. If you're going to use age as part of a discussion, especially in a negative connotation, be sure you have your facts straight.