Old GOAT vs young GOAT.
GOAT = greatest of all time, there is no young or old, only one.
Mahomes is a great, young QB and there have been many of those, Brady is the GOAT, and always will be.
I'm a Steeler fan, not a Brady fan, but great is great, and look at the stats.
Mahomes needs another 20 years in the league and then ... maybe.