At this point in their rivalry, Manning finally got Brady. Year 4 in the rivalry which started in 03, Manning took Brady down. Josh is five years into his rivalry with Mahomes.
Josh might have more in the tank after 30, but Lamar....not so sure.
Lamar is going to experience what happened to Cam and Vick, a fast decline. At this point he has taken between the NFL and college 10 seasons of poundings. He he is also rather small. Once his legs go, that's it for him.