Pull up Elway's numbers from 1983-1992.
Then pull up Elway's numbers from 1993-1998. Most of his big seasons were after Dan Reeves and his outdated offense left.
They signed multiple free agent OLs for him, multiple RBs for him, drafted guys like Glyn Milburn because he wanted him, hired his college QB Coach (Jim Fassel) to run the same offense Elway ran in college, then even hired his Dad in the front office.
In 1995 Shanahan (Elway's buddy) arrived, Gary Kubiak (long time Elway confidant) arrived as OC. They catered to Elway. They used his skills and they used his ability to create big plays coupled with the running game.
I live in Denver, I had to put up with this crap first hand.