I don't think Mike Conley played well against Denver at all. After he exploded in Game 3, when the entire team played well, he didn't play consistently well the remaining 4 games. He had a solid performance Game 6, but it wasn't enough. When Denver put Monte Morris in the starting lineup, Conley struggled.
As for Game 7, Don's 3rd quarter was one of the most amazing quarters of NBA basketball I have ever seen. He literally carried us offensively while shutting down Murray on the other end. It was a spectacle many don't talk about enough. In the 4th, he was able to still defend, but he faded offensively because he was exhausted. That's when Conley disappointed the most. That was his moment, and he failed.
Conley had a good series vs Memphis, but it still took Don coming back from injury to get us the wins necessary to advance. Conley is only an All Star because he got to play with Rudy and Don. What would Jrue have done? Or Chris Paul? Mike Conley is a good dude and a good player, but he flat out disappointed our franchise when we needed him most.