Treating it as "an experiment to determine which of the teams is the best" is not a good approach. There are a thousand contests in 90 minutes, but probably only two or three of them result in a goal, one of which may be from a penalty anyway.
High scoring games are much better at determining the best team on the day.
I believe that one of the major reasons for soccers massive worldwide spectator popularity is the low scoreline. You watch the game even if your team is obviously outclassed, as you can still win, and you can still win with just a few minutes left in most cases.