#5 The main event
The main event of a match is the most looked segment in retrospect. If it fails, people will most often consider the entire PPV a failure - immaterial of how the other segments of the card performed.
WWE Hell in a Cell is one of the most recent examples of this bias. Most of the initial matches were outstanding. However, the main event between Roman Reigns and Braun Strowman for the Universal Championship was horrible, and hence the fans left with a bad taste. That single clash tainted the entire PPV.
However, for TLC 2018, that was not the case. In an all women main event, all three superstars gave their absolute best to put on a great show. First of all, props to WWE for making full use of the popularity this feud had. This main event was probably one of the best main events WWE has had in a long time.