Take a look at the Ryder Cup, probably the closest event we can compare the MC to. Dave Stockton, a former RC captain said, "“If it’s between talent and chemistry, I’ll take chemistry. You can have the best players in the world, but if the captain pairs them wrong, you don’t win.”
Jim Furyk, who played on numerous RC said, "“I think chemistry is extremely important. I think not only how the players mix together as 12 but how we play together as a team, how the pairings are put together, how those personalities and those styles match up with each other and probably for different formats as well. I think that provides the players the best opportunity to compete and do well. I think it’s wise not only to pair guys not only by how their games are physically together but also by their temperament.”
Tom Watson, another former RC captain said, "When I made the captain’s picks that was about chemistry. Obviously Webb Simpson and Bubba Watson have a very good chemistry, and Keegan Bradley and Phil Mickelson have great chemistry. It’s shown in the past. You have to kind of bank on past experiences. That’s part of it. Also the way they are playing is a factor. But there’s no one factor. There’s a combination.”