That gap had two mvp seasons and two superbowl appearances lol it was a decent time period all things consideredHe doesn't have to play until he's 45 to accomplish what Brady has done. Brady went through a 10 year gap when he did nothing special. The key to Mahomes is getting to his 4th and 5th super bowls faster than Brady did.
Its no guarantee he even makes it back though. I put it 60 percent chance he gets to 4 faster than Tom and thats only cause the competition are choking dogs but we'll see.