It’s not different than any other World Series, the winning team always celebrates on the field, while the losing team quietly goes to the lockerroom.
Hockey is the only sport where the two teams shake hands at the end of the series.
Rugby teams shake hands at the end of every match. I’ve watched pro games where the two teams are battling to the very last play, but when the game ends, they catch their breaths and shake hands with each other. Now for many it’s a perfunctory hand shake but for others it appears to be genuine enthusiasm for a game well played.