I understand the mentality of saying it has to go to a player on the winning team, but if you've watched these games, there's no question that LeBron is, by far, the best, most important, and most valuable player on the court. I love Steph Curry. Love him. All day I love him. You can make a gay joke there if you want, and I don't care because I love Steph Curry so much. But he's not in the same stratosphere as LeBron, a fact that is true of every other player in the NBA, save MAYBE a healthy Durant.
For me, at the end of the day, the Finals MVP award is an individual award, and as such, it should be based entirely on individual performance.