rod03801:
The type of match is very much like high level professional matches when a championship is set for a maximum number of games but such matches are ended if a player has enough points to win.
Must win matches do cater to more aggressive players since draws have no impact. It is good to have the different types of matches.
Some choose the number of games matches because it is easy to know how many games you will have to play. I have had several wins matches in checkers where it took several games to get one win.