Well if you think about it, if you are a master ESR shooter, the first place Master trophy is up for grabs at a match where JM is shooting. Jerry will get the Division Champ award and the second place guy will get moved to first place Master ESR. I don't think JM being there is going to make any Masters not show up. If I was Master ESR I would love to have JM to compare to and still have a shot at the first place Master award. In my mind, it would still be second place but that isn't bad if you are close to keeping up with JM.
When I make master in ESR I hope that JM is still at the top of his game. I look forward to competing against him.