Swimming you don't have one person put up a time and then see if someone else can do it, Gymnastics, one person does a single routine, then the next person, they don't do 6 passes on the vault. Nascar, everyone is on the track at the same time, cycling time trials I believe are the same, a person goes once, then the next person goes.
So as I am typing this I realize the most important difference is that in our sport a person goes x # of times, then then next person y# of times...which is more like cornhole...we don't want to be water cornhole.
More action, more tension, better viewing...head to head.