Return Missionary QB or QB RM? Did he find and teach a boat load of people on his mission? Have a lot of baptisms (I know it's not about the numbers)? Maybe he taught and baptized a local minister of another faith and then in turn baptized the minister's entire congregation. That would certainly categorize him as a very talented RM, qualifying him for legendary status and give him a legitimate shot at the LDS Missionary Hall of Fame. The fact that he's also a QB certainly limits this discussion to a very small niche of possible contenders.
I never baptized a whole congregation on my mission but due to an illness I did spend some time in a local hospital run by another faith and gave away a boatload of BOM's and taught several discussions and even turned over 2 referrals for baptisms to the local missionaries of that area (one was my nurse and the other was the guy in the bed next to me) and I was invited to speak to their congregation during their sabbath (they had a large church right next to the hospital). On top of that I never lost a game in my entire sandlot or intramural football career as a QB. I don't have any stats to trump but we certainly were dominant and I was a fiery leader who willed his team to win out of a deep intense hatred of losing. When you take all of that into consideration I'm sure that I should be in the discussion somewhere if BO didn't make it clear that he was talking abotu the most talented RM QB or the most talented QB RM. He may be more talented than me as a QB but if he goofed off his whole mission and never even made senior companion then I certainly have him in the more talented RM department.